272 citations · 933 across the 31 of their papers we have counts for
31 papers
On Time-Evolution in Quantum Gravity
Lasha Berezhiani, Gia Dvali, Otari Sakhelashvili
We derive an explicit BRST-exact operator identity for the bulk Hamiltonian in quantum gravity, working within a BRST-invariant quantization of General Relativity, treated as a low…
Coherence and Quantum Stability of Relativistic Superfluid States
Lasha Berezhiani, Giordano Cintia, Giacomo Contri
We analyze the quantum dynamics of a relativistic homogeneous superfluid in a complex scalar field theory. Unlike zero-charge condensates, which undergo quantum evaporation due to…
Superfluid Dark Matter
Lasha Berezhiani, Giordano Cintia, Valerio De Luca +1
The superfluid dark matter model offers an elegant solution to reconcile discrepancies between the predictions of the cold dark matter paradigm and observations on galactic scales.…
Coherent States in Gauge Theories: Topological Defects and Other Classical Configurations
Lasha Berezhiani, Gia Dvali, Otari Sakhelashvili
We present a formulation of coherent states as of consistent quantum description of classical configurations in the BRST-invariant quantization of electrodynamics. The quantization…
Consistent Canonical Quantization of Gravity: Recovery of Classical GR from BRST-invariant Coherent States
Lasha Berezhiani, Gia Dvali, Otari Sakhelashvili
We perform canonical quantization of General Relativity, as an effective quantum field theory below the Planck scale, within the BRST-invariant framework. We show that the promotio…
Perturbative Construction of Coherent States
Lasha Berezhiani, Giordano Cintia, Michael Zantedeschi
The perturbative consistency of coherent states within interacting quantum field theory requires them to be altered beyond the simple non-squeezed form. Building on this point, we…