118 citations · 660 across the 21 of their papers we have counts for
3 papers · 1 filter
Entropy of Quantum States: Ambiguities
A. P. Balachandran, A. R. de Queiroz, S. Vaidya
The von Neumann entropy of a generic quantum state is not unique unless the state can be uniquely decomposed as a sum of extremal or pure states. As pointed out to us by Sorkin, th…
Quantum Physics and Fluctuating Topologies: Survey
M. Asorey, A. P. Balachandran, G. Marmo +4
The spin-statistics connection, quantum gravity and other physical considerations suggest that classical space-time topology is not an immutable attribute and can change in quantum…
Spontaneous Breaking of Lorentz Symmetry and Vertex Operators for Vortices
A. P. Balachandran, Seckin Kurkcuoglu, Amilcar R. de Queiroz
We first review the spontaneous Lorentz symmetry breaking in the presence of massless gauge fields and infraparticles. This result was obtained long time ago in the context of rigo…