158 citations · 3.2k across the 126 of their papers we have counts for
5 papers · 1 filter
Near-horizon modes and self-adjoint extensions of the Schroedinger operator
A. P. Balachandran, A. R. de Queiroz, Alberto Saa
We investigate the dynamics of scalar fields in the near-horizon exterior region of a Schwarzschild black hole. We show that low-energy modes are typically long-living and might be…
ADM Energy and Infra-gravitons
A P Balachandran, Babar Qureshi
In QED and QCD [1, 2], infrared photons and gluons alter the Hilbert space of the theory so that the in and out states live in a Hilbert space carrying a representation of basic co…
Edge States in Canonical Gravity
A. P. Balachandran, L. Chandar, Arshad Momen
It is well-known that gauge fields defined on manifolds with spatial boundaries support states localized at the boundary. In this talk, we show how similar states arise in canonica…
TOPOLOGY CHANGE AND QUANTUM PHYSICS
A. P. Balachandran, G. Bimonte, G. Marmo +1
The role of topology in elementary quantum physics is discussed in detail. It is argued that attributes of classical spatial topology emerge from properties of state vectors with s…
Edge states in Gravity and Black Hole Physics
A. P. Balachandran, L. Chandar, Arshad Momen
We show in the context of Einstein gravity that the removal of a spatial region leads to the appearance of an infinite set of observables and their associated edge states localized…