74 citations · 624 across the 44 of their papers we have counts for
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Revisiting primordial black holes formation from preheating instabilities: the case of Starobinsky inflation
Daniel del-Corral, Paolo Gondolo, K. Sravan Kumar +1
In recent years, the formation of primordial black holes (PBH) in the early universe inflationary cosmology has garnered significant attention. One plausible scenario for primordia…
Phase space noncommutativity, power-law inflation and quantum cosmology
S. M. M. Rasouli, João Marto
Considering an arbitrary dimensional FLRW universe in the framework of a generalized Sáez--Ballester (SB) theory, we establish a noncommutative (NC) cosmological model. We concentr…
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…
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…