Results 11 to 20 of about 5,717,674 (301)
Quantum Theory of Angular Momentum [PDF]
, 1988 Published
Khersonskii, V K +2 more
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The enigma of optical momentum in a medium [PDF]
, 2010 It is 100 years since Minkowski and Abraham first gave rival expressions for the momentum of light in a material medium. At the single-photon level, these correspond, respectively, either to multiplying or dividing the free-space value () by the ...
Loudon, Rodney, Barnett, Stephen M.
core +4 more sources
Energy, Momentum and Angular Momentum in Poincare Gauge Theory [PDF]
Progress of Theoretical Physics, 1985 In Poincare gauge theory we explore the relations between differential conservation laws and integral conserved quantities. In particular, we investigate in details spin angular-momentum . complex for an isolated system whose boundary at infinity is Minkowskian, by the generator method mutatis mutandis.
Hayashi, Kenji, Shirafuji, Takeshi
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Energies, 2021 A prototype of a new physics-based wind resource assessment method is presented, which allows the prediction of upper limits to the performance of large wind farms (including the power loss due to wind farm blockage) in a site-specific and time-dependent
Kelan Patel +2 more
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MOMENTUM AND HAMILTONIAN IN COMPLEX ACTION THEORY [PDF]
International Journal of Modern Physics A, 2012 In the complex action theory (CAT) we explicitly examine how the momentum and Hamiltonian are defined from the Feynman path integral (FPI) point of view based on the complex coordinate formalism of our foregoing paper. After reviewing the formalism briefly, we describe in FPI with a Lagrangian the time development of a ξ-parametrized wave function ...
Nagao, Keiichi +1 more
openaire +3 more sources
Out-of-horizon correlations following a quench in a relativistic quantum field theory
Journal of High Energy Physics, 2020 One of the manifestations of relativistic invariance in non-equilibrium quantum field theory is the “horizon effect” a.k.a. light-cone spreading of correlations: starting from an initially short-range correlated state, measurements of two observers at ...
I. Kukuljan, S. Sotiriadis, G. Takács
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Overlap singularity and time evolution in integrable quantum field theory
Journal of High Energy Physics, 2018 We study homogeneous quenches in integrable quantum field theory where the initial state contains zero-momentum particles. We demonstrate that the two-particle pair amplitude necessarily has a singularity at the two-particle threshold.
D. X. Horváth, M. Kormos, G. Takács
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Hydrodynamics of massless integrable RG flows and a non-equilibrium c-theorem
Journal of High Energy Physics, 2019 We study Euler scale hydrodynamics of massless integrable quantum field theories interpolating between two non-trivial renormalisation group fixed points after inhomogeneous quantum quenches.
D. X. Horváth
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Initial states in integrable quantum field theory quenches from an integral equation hierarchy
Nuclear Physics B, 2016 We consider the problem of determining the initial state of integrable quantum field theory quenches in terms of the post-quench eigenstates. The corresponding overlaps are a fundamental input to most exact methods to treat integrable quantum quenches ...
D.X. Horváth, S. Sotiriadis, G. Takács
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Hamiltonian truncation approach to quenches in the Ising field theory
Nuclear Physics B, 2016 In contrast to lattice systems where powerful numerical techniques such as matrix product state based methods are available to study the non-equilibrium dynamics, the non-equilibrium behaviour of continuum systems is much harder to simulate.
T. Rakovszky +4 more
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