73 citations · 507 across the 28 of their papers we have counts for
4 papers · 1 filter
Towards a unitary formulation of quantum field theory in curved space-time: the case of Schwarzschild black hole
K. Sravan Kumar, João Marto
We argue that the origin of unitarity violation and information loss paradox in our understanding of black holes (BH) lies in the standard way of doing quantum field theory in curv…
Cosmology in nonlocal gravity
Alexey S. Koshelev, K. Sravan Kumar, Alexei A. Starobinsky
In this chapter we review the recent developments of realizing -like inflation in the framework of a most general UV nonlocal extension of Einstein's general theory of relativ…
A robust explanation of CMB anomalies with a new formulation of inflationary quantum fluctuations
K. Sravan Kumar, João Marto
The presence of CMB Hemispherical Asymmetry (HPA) challenges the current understanding of inflationary cosmology which does not generically predict the parity violation in the prim…
Towards a unitary formulation of quantum field theory in curved spacetime: the case of de Sitter spacetime
K. Sravan Kumar, João Marto
Before we ask what the quantum gravity theory is, it is a legitimate quest to formulate a robust quantum field theory in curved spacetime (QFTCS). Several conceptual problems, espe…