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07.03.2024 (Thursday)

Geometric conservation in curved spacetime and entropy

Regular Seminar Sinya Aoki (Kyoto University)

at:
14:00 QMUL
room G. O. Jones 610 and Zoom
abstract:

In this talk, I provide an improved definition of new conserved quantities derived from the energy-momentum tensor in curved spacetime by introducing an additional scalar function. I find that the conserved current and the associated conserved charge become geometric under a certain initial condition of the scalar function, and show that such a conserved geometric current generally exists in curved spacetime. Furthermore, I demonstrate that the geometric conserved current agrees with the entropy current for the perfect fluid, thus the conserved charge is the total entropy of the system.