R
Raf Guedens
Researcher at Institute of Mathematical Sciences, Chennai
Publications - 4
Citations - 503
Raf Guedens is an academic researcher from Institute of Mathematical Sciences, Chennai. The author has contributed to research in topics: Entropy (arrow of time) & Einstein. The author has an hindex of 2, co-authored 4 publications receiving 455 citations. Previous affiliations of Raf Guedens include University of Crete & University of Maryland, College Park.
Papers
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Nonequilibrium Thermodynamics of Spacetime
TL;DR: It is shown that a curvature correction to the entropy that is polynomial in the Ricci scalar requires a nonequilibrium treatment.
Journal ArticleDOI
Horizon entropy and higher curvature equations of state
TL;DR: In this paper, it was shown that the horizon entropy depends on an approximate local Killing vector in a way that mimics the diffeomorphism Noether charge that yields the entropy of a stationary black hole, and this can be made to work if various restrictions are imposed on the nature of the horizon slices and the approximate Killing vector.
Journal ArticleDOI
Horizon entropy and higher curvature equations of state
TL;DR: In this article, Clausius relation between entropy change and heat flux has been used to derive Einstein's field equations as an equation of state, and a similar derivation can be given for extensions beyond Einstein gravity to include higher derivative and higher curvature terms.
Thermodynamics of spacetime in generally covariant theories of gravitation
Christopher Eling,Raf Guedens +1 more
TL;DR: In this paper, it was shown that the First Law Q = TdS holds for all local Rindler causal horizons through each spacetime point, and that the requirement of thermodynamic equilibrium is incompatible with the local stationarity of the horizon.