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Path integral duality modified propagators in spacetimes with constant curvature
Dawood Kothawala, L. Sriramkumar, S. Shankaranarayanan +1
The hypothesis of path integral duality provides a prescription to evaluate the propagator of a free, quantum scalar field in a given classical background, taking into account the…
Thermodynamic structure of Lanczos-Lovelock field equations from near-horizon symmetries
Dawood Kothawala, T. Padmanabhan
It is well known that, for a wide class of spacetimes with horizons, Einstein equations near the horizon can be written as a thermodynamic identity. It is also known that the Einst…
Entropy density of spacetime and thermodynamic interpretation of field equations of gravity in any diffeomorphism invariant theory
T. Padmanabhan
I argue that the field equations of any theory of gravity which is diffeomorphism invariant must be expressible as a thermodynamic identity, TdS=dE around any event in the spacetim…
Metal Enrichment and Reionization Constraints on Early Star Formation
J. S. Bagla, Girish Kulkarni, T. Padmanabhan
The epoch of reionization and formation of first stars are inter-linked topics that are of considerable interest. We use a simplified approach for studying formation of stars in co…