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Relativistic wave equation describing massless fermions
physics, particularly in quantum field theory, the Weyl equation (/vaɪl/ VILE) is a relativistic wave equation for describing massless spin-1/2 particles which
Weyl_equation
German mathematician (1885–1955)
wave equation Weyl expansion Weyl fermion Weyl gauge Weyl gravity Weyl notation Weyl quantization Weyl spinor Weyl sum, a type of exponential sum Weyl symmetry:
Hermann_Weyl
Relativistic quantum mechanical wave equation
Schrödinger equation, which described wave functions of only one complex value. Moreover, in the limit of zero mass, the Dirac equation reduces to the Weyl equation
Dirac_equation
Relativistic wave description of fermions
charge conjugate. As a 2×2 differential equation acting on a complex two-component spinor, resembling the Weyl equation with a properly Lorentz covariant mass
Majorana_equation
Non-tensorial representation of the spin group
through equations such as the Dirac equation and the Weyl equation, which are first-order differential equations on the spinor bundle. These equations describe
Spinor
Wave equations respecting special and general relativity
but this was phenomenological. Weyl found a relativistic equation in terms of the Pauli matrices; the Weyl equation, for massless spin-1/2 fermions.
Relativistic_wave_equations
Concept in quantum physics
in quantum field theory. Weyl spinors are a solution to the Dirac equation derived by Hermann Weyl, called the Weyl equation. For example, one-half of
Weyl_semimetal
Mathematical equation
In mathematics, Weyl's lemma, named after Hermann Weyl, states that every weak solution of Laplace's equation is a smooth solution. This contrasts with
Weyl's lemma (Laplace equation)
Weyl's_lemma_(Laplace_equation)
Rank-3 tensor in general relativity associated with gauge fields
definition is through the Weyl–Lanczos equations, which demonstrate the generation of the Weyl tensor from the Lanczos tensor. These equations, presented below
Lanczos_tensor
Measure of the curvature of a pseudo-Riemannian manifold
relativity, the Weyl curvature is the only part of the curvature that exists in free space—a solution of the vacuum Einstein equation—and it governs the
Weyl_tensor
Donder–Weyl Hamiltonian function H defined as H = p a i ∂ i y a − L {\displaystyle H=p_{a}^{i}\partial _{i}y^{a}-L} the De Donder–Weyl equations are: ∂
De_Donder–Weyl_theory
formula Weyl distance function Weyl equation, a relativistic wave equation Weyl expansion Weyl fermion Weyl gauge Weyl gravity Weyl group Length of a Weyl group
List of things named after Hermann Weyl
List_of_things_named_after_Hermann_Weyl
Field-equations in general relativity
field equations (EFE; also known as Einstein's equations) relate the geometry of spacetime to the distribution of matter-energy within it. The equations were
Einstein_field_equations
version of the Einstein vacuum equations, first considered by Cartan (1943) and named after Albert Einstein and Hermann Weyl. Specifically, if M {\displaystyle
Einstein–Weyl_geometry
Description of a quantum-mechanical system
difficulties in solving the differential equation for hydrogen (he had sought help from his friend the mathematician Hermann Weyl) Schrödinger showed that his nonrelativistic
Schrödinger_equation
Topics referred to by the same term
algebras Weyl's theorem on eigenvalues Weyl's criterion for equidistribution (Weyl's criterion) Weyl's lemma on the hypoellipticity of the Laplace equation results
Weyl's_theorem
Condensed matter system
feature of Weyl semimetals is that the surface states form Fermi arcs since the Fermi surface does not form a closed loop. While the Weyl equation was originally
Dirac_matter
Second-order partial differential equation
In mathematics and physics, Laplace's equation is a second-order partial differential equation named after Pierre-Simon Laplace, who first studied its
Laplace's_equation
Eigenvalue problem for the Laplace operator
)^{p}}}\,.} Laplace's equation (a particular case of the Helmholtz equation) Weyl expansion Blanche (2014). Helmholtz Equation, from the Encyclopedia
Helmholtz_equation
Description in spectral theory
In mathematics, especially spectral theory, Weyl's law describes the asymptotic behavior of eigenvalues of the Laplace–Beltrami operator. This description
Weyl_law
Set of quasilinear hyperbolic equations governing adiabatic and inviscid flow
In fluid dynamics, the Euler equations are a set of partial differential equations governing adiabatic and inviscid flow. They are named after Leonhard
Euler equations (fluid dynamics)
Euler_equations_(fluid_dynamics)
Generalization of the Levi-Civita connection
In differential geometry, a Weyl connection (also called a Weyl structure) is a generalization of the Levi-Civita connection that makes sense on a conformal
Weyl_connection
Finite sum formed using the exponential function
good estimates for these sums, a trend started by basic work of Hermann Weyl in diophantine approximation. The main thrust of the subject is that a sum
Exponential_sum
Complex four-component spinor
v_{s}(p){\overline {v}}_{s}(p)&={p\!\!\!/}-m.\end{aligned}}} Dirac equation Weyl equation Majorana equation Helicity basis Spin(1,3), the double cover of SO(1,3) by
Plane-wave solutions to the Dirac equation
Plane-wave_solutions_to_the_Dirac_equation
Equations describing classical electromagnetism
Maxwell's equations are a set of coupled partial differential equations that describe how electric and magnetic fields are generated by electric charges
Maxwell's_equations
Mathematical problem in spectral theory
fractal media, and the Weyl–Berry conjecture", in B. D. Sleeman; R. J. Jarvis (eds.), Ordinary and Partial Differential Equations, Vol IV, Proc. Twelfth
Hearing_the_shape_of_a_drum
Generators of the Clifford algebra for relativistic quantum mechanics
computations in general, and in particular are fundamental to the Dirac equation for relativistic spin 1 2 {\displaystyle {\tfrac {\ 1\ }{2}}} particles
Gamma_matrices
Class of solutions to Einstein's field equation
{\displaystyle T_{ab}} , we just need to substitute the Weyl metric Eq(1) into Einstein's equation (with c=G=1): and work out the two functions ψ ( ρ , z
Weyl_metrics
Differential algebra
algebra, the Weyl algebras are abstracted from the ring of differential operators with polynomial coefficients. They are named after Hermann Weyl, who introduced
Weyl_algebra
Physics concept expressed as E = mc²
Nagasaki in 1945, the equation E = mc2 became directly linked in the public eye with the power and peril of nuclear weapons. The equation was featured on page
Mass–energy_equivalence
Formulation of classical mechanics using momenta
Hamilton's equations consist of 2n first-order differential equations, while Lagrange's equations consist of n second-order equations. Hamilton's equations usually
Hamiltonian_mechanics
Class of differential equations expressible in differential algebra
In mathematics, an algebraic differential equation is a differential equation that can be expressed by means of differential algebra. There are several
Algebraic differential equation
Algebraic_differential_equation
Equation explaining structure of a spherical body of isotropic material
In astrophysics, the Tolman–Oppenheimer–Volkoff (TOV) equation constrains the structure of a spherically symmetric body of isotropic material which is
Tolman–Oppenheimer–Volkoff equation
Tolman–Oppenheimer–Volkoff_equation
Exact solution for the Einstein field equations
metric is an exact solution of the Einstein field equations of general relativity; these equations are highly non-linear, which makes exact solutions
Kerr_metric
Theorem in differential geometry
Weyl–Schouten theorem (named after Hermann Weyl and Jan Arnoldus Schouten) characterizes the existence of isothermal coordinates by certain equations
Weyl–Schouten_theorem
Outgoing spherical wave as a linear combination of plane waves
In physics, the Weyl expansion, also known as the Weyl identity or angular spectrum expansion, expresses an outgoing spherical wave as a linear combination
Weyl_expansion
Quantum mechanics taking into account particles near or at the speed of light
antiparallel alignment. An automatic occurrence in the Dirac equation (and the Weyl equation) is the projection of the spin 1/2 operator on the 3-momentum
Relativistic quantum mechanics
Relativistic_quantum_mechanics
Representation of the symmetry group of spacetime in special relativity
representation theory of semisimple groups, largely due to Élie Cartan and Hermann Weyl, but the Lorentz group has also received special attention due to its importance
Representation theory of the Lorentz group
Representation_theory_of_the_Lorentz_group
Properties underlying modern physics
transformation D(Λ). In the context of the Dirac equation and Weyl equation, the Weyl spinors satisfying the Weyl equation transform under the simplest irreducible
Symmetry_in_quantum_mechanics
Branch of mathematical analysis
Fractional differential equations, also known as extraordinary differential equations, are a generalization of differential equations through the application
Fractional_calculus
Physical theory describing classical fields
how one or more fields in physics interact with matter through field equations, without considering effects of quantization; theories that incorporate
Classical_field_theory
Symmetry of physical laws under a charge-conjugation transformation
pair of Weyl spinors ψ L {\displaystyle \psi _{\text{L}}} and ψ R , {\displaystyle \psi _{\text{R}},} each individually satisfying the Weyl equation, but
C-symmetry
Mathematical physics equation tied to the Dirac current
gyromagnetic ratio. For a single massless particle obeying the right-handed Weyl equation, the spin-1/2 is locked to the direction k ^ {\displaystyle {\hat {\mathbf
Gordon_decomposition
Equations in physical cosmology
The Friedmann equations, also known as the Friedmann–Lemaître (FL) equations, are a set of equations in physical cosmology that govern cosmic expansion
Friedmann_equations
English mathematician, mathematical physicist (born 1931)
he presents his reasons, to do with Einstein's field equations, the Weyl curvature C, and the Weyl curvature hypothesis (WCH), that the transition at the
Roger_Penrose
Chinese-American mathematician (born 1949)
contributions to partial differential equations, the Calabi conjecture, the positive energy theorem, and the Monge–Ampère equation. Yau is considered one of the
Shing-Tung_Yau
Relativistic wave equation in quantum mechanics
In particle physics, the Klein–Gordon equation is a relativistic wave equation for spinless particles. It was discovered 1926 as the relativistic generalization
Klein–Gordon_equation
Lie group of Lorentz transformations
SO(1, 3) or even O(1, 3) when they mean SO+(1, 3). See the article Weyl equation for explicit derivations. Weinberg 2002 Varićak V 1910 "Theory of Relativity
Lorentz_group
Mathematical description of fermions
wave function solutions to the Dirac equation. They are constructed out of two simpler component spinors, the Weyl spinors. Each of the two component spinors
Dirac_spinor
Field equation for spin-3/2 fermions
Rarita–Schwinger equation is the relativistic field equation for spin-3/2 fermions. It is the spin-3/2 analogue of the Dirac equation for spin-1/2 fermions
Rarita–Schwinger_equation
Part of spectral theory
expansion associated with a linear ordinary differential equation. In his dissertation, Hermann Weyl generalized the classical Sturm–Liouville theory on a
Spectral theory of ordinary differential equations
Spectral_theory_of_ordinary_differential_equations
wrinkles in a constrained two dimensional system Weyl electrons In Weyl semimetals, electrons behave as massless, following the Weyl equation. electron
List_of_quasiparticles
Result in general relativity
Raychaudhuri equation, or Landau–Raychaudhuri equation, is a fundamental result describing the motion of nearby bits of matter. The equation is important
Raychaudhuri_equation
Exact solution to Einstein's field equations
In general relativity, the Weyl–Lewis–Papapetrou coordinates are used in solutions to the vacuum region surrounding an axisymmetric distribution of mass–energy
Weyl–Lewis–Papapetrou coordinates
Weyl–Lewis–Papapetrou_coordinates
Generalization of straight line to a curved space time
around the star onto three-dimensional (3-D) space. The full geodesic equation is d 2 x μ d s 2 + Γ μ α β d x α d s d x β d s = 0 {\displaystyle {d^{2}x^{\mu
Geodesics in general relativity
Geodesics_in_general_relativity
Wigner distribution function in physics as opposed to in signal processing
Hermann Weyl in 1927, in a context related to representation theory in mathematics (see Weyl quantization). In effect, it is the Wigner–Weyl transform
Wigner quasiprobability distribution
Wigner_quasiprobability_distribution
Set of spacetime events, light-connected to a given event
reflected in the non-vanishing of the Weyl tensor. Absolute future Absolute past Hyperbolic partial differential equation Hypercone Light-cone coordinates
Light_cone
Special functions in mathematics
is in fact the affine Weyl group of A 1 {\displaystyle A_{1}} ; see below). If b = 1 / 2 {\displaystyle b=1/2} then the equation has the solution y = 0
Painlevé_transcendents
Exact solution in general relativity
The metric was discovered between 1916 and 1921 by Hans Reissner, Hermann Weyl, Gunnar Nordström and George Barker Jeffery independently. In spherical coordinates
Reissner–Nordström_metric
Module over a sheaf of differential operators
implies the relation [∂i, f] = ∂f / ∂xi, thereby relating the Weyl algebra to differential equations. An (algebraic) D-module is, by definition, a left module
D-module
Gamma matrices for arbitrary Clifford algebras
invariant wave equations for fermions (such as spinors) in arbitrary space-time dimensions, notably in string theory and supergravity. The Weyl–Brauer matrices
Higher-dimensional gamma matrices
Higher-dimensional_gamma_matrices
Set of five scalars
firstly compute the spin coefficients and then use the NP field equations to derive the five Weyl-NP scalars[citation needed] Ψ 0 = D σ − δ κ − ( ρ + ρ ¯ )
Weyl_scalar
determine the Riemann tensor, but leaves the Weyl tensor unspecified (see the Ricci decomposition), the Einstein equation may be considered a kind of compatibility
Exact solutions in general relativity
Exact_solutions_in_general_relativity
Conceptual conflict between general relativity and quantum mechanics
invariance generates a conserved Weyl current according to Noether's theorem. In scale-invariant cosmological models, this Weyl current naturally gives rise
Problem_of_time
Approximate equations of motion in general relativity
Einstein–Infeld–Hoffmann equations of motion, jointly derived by Albert Einstein, Leopold Infeld and Banesh Hoffmann, are the differential equations describing the
Einstein–Infeld–Hoffmann equations
Einstein–Infeld–Hoffmann_equations
Mathematical theorem
Weyl relations (E1). Nevertheless, in "good" cases, we expect that operators satisfying the canonical commutation relation will also satisfy the Weyl
Stone–von_Neumann_theorem
Type of weak interaction in nuclear and atomic physics
for its basis vectors the (mostly implicit) Pauli matrices from the Weyl equation:[clarification needed] σ μ = ( I , σ 1 , σ 2 , σ 3 ) {\displaystyle
Weak_charge
German mathematician (1862–1943)
Hermann Weyl and John von Neumann's work on the mathematical equivalence of Werner Heisenberg's matrix mechanics and Erwin Schrödinger's wave equation, and
David_Hilbert
Notation in general relativity
transportation equations, NP field equations and Maxwell-NP equations together constitute the Einstein-Maxwell equations in Newman–Penrose formalism. The Weyl scalar
Newman–Penrose_formalism
Proposed theory of gravitation
as the sum of the Weyl curvature (or conformal curvature tensor) and a piece constructed from the Einstein tensor. The second equation says that the trace
Brans–Dicke_theory
Theoretical attempts to unify the forces of nature
high-order field equations. The critical mathematical ingredients in this theory, the Lagrangians and curvature tensor, were worked out by Weyl and colleagues
Classical unified field theories
Classical_unified_field_theories
Gravity theories that are invariant under Weyl transformations
is the Weyl tensor. This is to be contrasted with the usual Einstein–Hilbert action where the Lagrangian is just the Ricci scalar. The equation of motion
Conformal_gravity
condensed way in which some tensor equations may be written using the spinor formalism. For example, in classifying the Weyl tensor, determining the various
Mathematics of general relativity
Mathematics_of_general_relativity
Aspect of relativity in physics
longitudinal–longitudinal, transverse–longitudinal, and transverse–transverse by Hermann Weyl. However, the nature of Einstein's approximations led many (including Einstein
Gravitational_wave
Type of Kac–Moody algebras
T} in the vertex algebra. The Weyl group of an affine Lie algebra can be written as a semi-direct product of the Weyl group of the zero-mode algebra
Affine_Lie_algebra
the Dirac equation with the mass set to zero, γ μ p μ Ψ = 0. {\displaystyle \gamma ^{\mu }p_{\mu }\Psi =0.} The gamma matrices in the Weyl basis are:
Neutrino_theory_of_light
Classification used in differential geometry and general relativity
of the Weyl tensor at each event in a Lorentzian manifold. It is most often applied in studying exact solutions of Einstein's field equations, but strictly
Petrov_classification
Electromagnetism in general relativity
In physics, Maxwell's equations in curved spacetime govern the dynamics of the electromagnetic field in curved spacetime (where the metric may deviate
Maxwell's equations in curved spacetime
Maxwell's_equations_in_curved_spacetime
German-born theoretical physicist (1879–1955)
arises from special relativity, has been called "the world's most famous equation". He received the 1921 Nobel Prize in Physics for "his services to theoretical
Albert_Einstein
Formulation of quantum mechanics
manifest Lorentz covariance (time and space components of quantities enter equations in the same way) is easier to achieve than in the operator formalism of
Path-integral_formulation
General relativity equation
Mathisson–Papapetrou equations and Papapetrou–Dixon equations. All three sets of equations describe the same physics. These equations are named after Myron
Mathisson–Papapetrou–Dixon equations
Mathisson–Papapetrou–Dixon_equations
trajectories obey the Hamilton equations in quantum form and play the role of characteristics in terms of which time-dependent Weyl's symbols of quantum operators
Method of quantum characteristics
Method_of_quantum_characteristics
Meanings of mass in special relativity
mass, or the invariant mass for systems, and E is the total energy. The equation is also valid for photons, which have m = 0: E 2 − ( p c ) 2 = 0 {\displaystyle
Mass_in_special_relativity
Algebraic study of differential equations
algebraic varieties, which are solution sets of systems of polynomial equations. Weyl algebras and Lie algebras may be considered as belonging to differential
Differential_algebra
Debate about credit for general relativity
Albert Einstein's discovery of the gravitational field equations of general relativity and David Hilbert's almost simultaneous derivation of the theory
General relativity priority dispute
General_relativity_priority_dispute
Equation used in general relativity
In general relativity, the Ernst equation is an integrable non-linear partial differential equation, named after the American physicist Frederick J. Ernst [sl]
Ernst_equation
Theory of gravitation as curved spacetime
relation is specified by the Einstein field equations, a system of second-order partial differential equations. John Archibald Wheeler summarized it: "Space-time
General_relativity
Type of number sequence
MathWorld. Weisstein, Eric W. "Weyl's Criterion". MathWorld. Weyl's Criterion at PlanetMath. Lecture notes by Charles Walkden with proof of Weyl's Criterion
Equidistributed_sequence
Relation satisfied by conjugate variables in quantum mechanics
thus finally elucidated the consistent correspondence mechanism, the Wigner–Weyl transform, that underlies an alternate equivalent mathematical representation
Canonical commutation relation
Canonical_commutation_relation
Class of solutions to Einstein's equation in general relativity
solutions to Einstein's equation in general relativity. The line element for the conformastatic class of solutions in Weyl's canonical coordinates reads
Conformastatic_spacetimes
Axiomatization of probability and physics
mechanics in a way that is close to an axiomatic system, as did Hermann Weyl with the assistance of Erwin Schrödinger. In the 1930s, probability theory
Hilbert's_sixth_problem
Swiss astronomer (1898–1974)
Einstein field equations Linearized gravity Post-Newtonian formalism Raychaudhuri equation Hamilton–Jacobi–Einstein equation Ernst equation Phenomena Black
Fritz_Zwicky
Theorem in general relativity
solutions of the Einstein field equations relating the existence of a certain type of congruence with algebraic properties of the Weyl tensor. More precisely,
Goldberg–Sachs_theorem
Wave equation for arbitrary spin particles
Dirac equation Generalizations of Pauli matrices Wigner D-matrix Weyl–Brauer matrices Higher-dimensional gamma matrices Joos–Weinberg equation, alternative
Bargmann–Wigner_equations
Reformulation of general relativity
relativity, the Hamilton–Jacobi–Einstein equation (HJEE) or Einstein–Hamilton–Jacobi equation (EHJE) is an equation in the Hamiltonian formulation of geometrodynamics
Hamilton–Jacobi–Einstein equation
Hamilton–Jacobi–Einstein_equation
formalism, Weyl curvature hypothesis, highly influential monograph), Alexei Zinovievich Petrov (Petrov classification of algebraic properties of Weyl curvature
List of contributors to general relativity
List_of_contributors_to_general_relativity
Expressing a plane wave as a combination of spherical waves
Helmholtz equation Plane wave expansion method in computational electromagnetism Weyl expansion Digital Library of Mathematical Functions, Equation 10.60
Plane-wave_expansion
2D conformal field theory used in string theory
invariant under worldsheet diffeomorphisms (or coordinates transformations) and Weyl transformations. Assume the following transformation: σ α → σ ~ α ( σ , τ
Polyakov_action
Trace radiation from the early universe
Einstein field equations Linearized gravity Post-Newtonian formalism Raychaudhuri equation Hamilton–Jacobi–Einstein equation Ernst equation Phenomena Black
Cosmic_microwave_background
Physics principle
the Maxwell equations have the same form in all inertial frames of reference. In the framework of general relativity, the Maxwell equations or the Einstein
Principle_of_relativity
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