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Conserved energy–momentum tensor for real-time lattice simulations [PDF]
European Physical Journal C: Particles and FieldsWe derive an expression for the energy–momentum tensor in the discrete lattice formulation of pure glue QCD. The resulting expression satisfies the continuity equation for energy conservation up to numerical errors with a symmetric procedure for the time
K. Boguslavski +3 more
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Parametrization of transition energy-momentum tensor form factors
Physics Letters B, 2022 While the Lorentz structures of the N→Δ transition matrix element of the vector current are well-known, that of the symmetric energy-momentum tensor current is unknown.
June-Young Kim
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A finite energy-momentum tensor for the ϕ3 theory in 6 dimensions
Nuclear Physics B, 2021 Following Brown [1], we construct composite operators for the scalar ϕ3 theory in six dimensions using renormalisation group methods with dimensional regularisation.
Pavan Dharanipragada, Bala Sathiapalan
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Gravitational transverse-momentum distributions
Physics Letters B, 2023 We study the energy-momentum tensor of spin-0 and spin-12 hadrons in momentum space. We parametrize this object in terms of so-called gravitational transverse-momentum distributions, and we identify in the quark sector the relations between the latter ...
Cédric Lorcé, Qin-Tao Song
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Boson mixing and flavor vacuum in the expanding Universe: A possible candidate for the dark energy
Physics Letters B, 2023 We analyze the boson mixing in curved spacetime and compute the expectation value of the energy-momentum tensor of bosons on the flavor vacuum in spatially flat Friedmann-Lemaître-Robertson-Walker metrics.
Antonio Capolupo, Aniello Quaranta
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Noether and Hilbert (metric) energy-momentum tensors are not, in general, equivalent
Nuclear Physics B, 2021 Multiple methods for deriving the energy-momentum tensor for a physical theory exist in the literature. The most common methods are to use Noether's first theorem with the 4-parameter Poincaré translation, or to write the action in a curved spacetime and
Mark Robert Baker +2 more
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Energy–momentum tensor in the scalar diquark model
European Physical Journal C: Particles and Fields, 2023 We study in detail the energy–momentum tensor of the scalar diquark model at the one-loop level using two different regularization methods. We extract the perturbative expressions for the gravitational form factors and we check explicitly that all the ...
Arturo Amor-Quiroz +3 more
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Atti della Accademia Peloritana dei Pericolanti : Classe di Scienze Fisiche, Matematiche e Naturali, 2023 Creating a modified Belinfante/Rosenfeld procedure, Mathisson-Papapetrou-like equations are derived by which a comparison of General-Covariant Continuum Physics (GCCP) with General Relativity Theory (GRT) becomes possible.
Wolfgang Muschik
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On Sugawara construction on celestial sphere
Journal of High Energy Physics, 2020 Conformally soft gluons are conserved currents of the Celestial Conformal Field Theory (CCFT) and generate a Kac-Moody algebra. We study celestial amplitudes of Yang-Mills theory, which are Mellin transforms of gluon amplitudes and take the double soft ...
Wei Fan +3 more
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Covariant Derivative of Fermions and All That
Universe, 2022 We present detailed pedagogical derivation of covariant derivative of fermions and some related expressions, including commutator of covariant derivatives and energy-momentum tensor of a free Dirac field.
Ilya L. Shapiro
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