Results 51 to 60 of about 436,858 (367)

(1,0) gauge theories on the six-sphere

open access: yesSciPost Physics, 2019
We construct gauge theories with a vector-multiplet and hypermultiplets of $(1,0)$ supersymmetry on the six-sphere. The gauge coupling on the sphere depends on the polar angle.
Usman Naseer
doaj   +1 more source

Path integral representation of the evolution operator for the Dirac equation [PDF]

open access: yes, 2006
A path integral representation of the evolution operator for the four-dimensional Dirac equation is proposed. A quadratic form of the canonical momenta regularizes the original representation of the path integral in the electron phase space.
Lukyanenko, Alexander S.   +1 more
core   +2 more sources

The Feynman effective classical potential in the Schr\"odinger formulation

open access: yes, 1998
New physical insight into the correspondence between path integral concepts and the Schr\"odinger formulation is gained by the analysis of the effective classical potential, that is defined within the Feynman path integral formulation of statistical ...
A. Cuccoli   +9 more
core   +2 more sources

The Principle of Covariance and the Hamiltonian Formulation of General Relativity

open access: yesEntropy, 2021
The implications of the general covariance principle for the establishment of a Hamiltonian variational formulation of classical General Relativity are addressed.
Massimo Tessarotto, Claudio Cremaschini
doaj   +1 more source

Path Integral Approach to 't Hooft's Derivation of Quantum from Classical Physics

open access: yes, 2004
We present a path-integral formulation of 't Hooft's derivation of quantum from classical physics. The crucial ingredient of this formulation is Gozzi et al.'s supersymmetric path integral of classical mechanics.
A. L. Fetter   +35 more
core   +3 more sources

T T ¯ $$ T\overline{T} $$ deformations, massive gravity and non-critical strings

open access: yesJournal of High Energy Physics, 2020
The T T ¯ $$ T\overline{T} $$ deformation of a 2 dimensional field theory living on a curved space- time is equivalent to coupling the undeformed field theory to 2 dimensional ‘ghost-free’ massive gravity. We derive the equivalence classically, and using
Andrew J. Tolley
doaj   +1 more source

Unifying Theory for Casimir Forces: Bulk and Surface Formulations

open access: yesUniverse, 2021
The principles of the electromagnetic fluctuation-induced phenomena such as Casimir forces are well understood. However, recent experimental advances require universal and efficient methods to compute these forces.
Giuseppe Bimonte, Thorsten Emig
doaj   +1 more source

Path Integral Discussion for Smorodinsky-Winternitz Potentials: I.\ Two- and Three Dimensional Euclidean Space

open access: yes, 1994
Path integral formulations for the Smorodinsky-Winternitz potentials in two- and three-dimen\-sional Euclidean space are presented. We mention all coordinate systems which separate the Smorodinsky-Winternitz potentials and state the corresponding path ...
Aharonov   +133 more
core   +1 more source

't Hooft's quantum determinism -- path integral viewpoint [PDF]

open access: yes, 2005
We present a path integral formulation of 't Hooft's derivation of quantum from classical physics. Our approach is based on two concepts: Faddeev-Jackiw's treatment of constrained systems and Gozzi's path integral formulation of classical mechanics. This
Blasone, Massimo   +2 more
core   +3 more sources

Chiral Anomalies via Classical and Quantum Functional Methods

open access: yes, 2004
In the quantum path integral formulation of a field theory model an anomaly arises when the functional measure is not invariant under a symmetry transformation of the Lagrangian.
A. SILVESTRI   +6 more
core   +3 more sources

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