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Einstein's equations as a thermodynamic identity: The cases of stationary axisymmetric horizons and evolving spherically symmetric horizons
Dawood Kothawala, Sudipta Sarkar, T. Padmanabhan
There is an intriguing analogy between the gravitational dynamics of the horizons and thermodynamics. In case of general relativity, as well as for a wider class of Lanczos-Loveloc…
Thermodynamic route to Field equations in Lanczos-Lovelock Gravity
Aseem Paranjape, Sudipta Sarkar, T. Padmanabhan
Spacetimes with horizons show a resemblance to thermodynamic systems and one can associate the notions of temperature and entropy with them. In the case of Einstein-Hilbert gravity…
Thermodynamics of horizons from a dual quantum system
Sudipta Sarkar, T. Padmanabhan
It was shown recently that, in the case of Schwarschild black hole, one can obtain the correct thermodynamic relations by studying a model quantum system and using a particular dua…
Casimir Effect confronts Cosmological Constant
Gaurang Mahajan, Sudipta Sarkar, T. Padmanabhan
It has been speculated that the zero-point energy of the vacuum, regularized due to the existence of a suitable ultraviolet cut-off scale, could be the source of the non-vanishing…