Energy–momentum tensor in the scalar diquark model
Arturo Amor-Quiroz, William Focillon, Cédric Lorcé, Simone Rodini
Abstract
Abstract 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 Poincaré sum rules are satisfied. We confirm in particular that, like in quantum electrodynamics, the symmetric energy–momentum tensor is finite. Finally, we discuss the results for the trace of the energy–momentum tensor and its relation to the mass of the system.
Topics & Concepts
Stress–energy tensorPhysicsTensor densityTensor contractionScalar (mathematics)Tensor (intrinsic definition)Mathematical physicsMomentum (technical analysis)Regularization (linguistics)Quantum electrodynamicsSymmetric tensorEnergy–momentum relationLanczos tensorExact solutions in general relativityTensor fieldClassical mechanicsQuantum mechanicsMathematicsComputer scienceGeometryArtificial intelligenceEconomicsFinanceQuantum Chromodynamics and Particle InteractionsBlack Holes and Theoretical PhysicsPulsars and Gravitational Waves Research