72 citations · 628 across the 49 of their papers we have counts for
4 papers · 1 filter
Dirac fermion, cosmological event horizons and quantum entanglement
Sourav Bhattacharya, Shankhadeep Chakrabortty, Shivang Goyal
We discuss the field quantisation of a free massive Dirac fermion in the two causally disconnected static patches of the de Sitter spacetime, by using mode functions that are norma…
The maximum turnaround radius for axisymmetric cosmic structures
Sourav Bhattacharya, Theodore N Tomaras
Three simple idealised models are studied in order to develop some intuition about the leading order effect of non-sphericity on the maximum turnaround size of lar…
Over-rotation intervals of bimodal interval maps
Sourav Bhattacharya, Alexander Blokh
We describe all possible bimodal over-twist patterns. In particular, we give an algorithm allowing one to determine what the left endpoint of the over-rotation interval of a given…
Very badly ordered cycles of interval maps
Sourav Bhattacharya, Alexander Blokh
We prove that a periodic orbit with coprime over-rotation pair is an over-twist periodic orbit iff the -linear map has the over-rotation interval with left endpoint equal to…