241 citations · 700 across the 13 of their papers we have counts for
13 papers
The Quantum Perfect Fluid in 2D
Aurélien Dersy, Andrei Khmelnitsky, Riccardo Rattazzi
We consider the field theory that defines a perfect incompressible 2D fluid. One distinctive property of this system is that the quadratic action for fluctuations around the ground…
Gapped Goldstones at the cut-off scale: a non-relativistic EFT
Gabriel Cuomo, Angelo Esposito, Emanuele Gendy +3
At finite density, the spontaneous breakdown of an internal non-Abelian symmetry dictates, along with gapless modes, modes whose gap is fixed by the algebra and proportional to the…
Light Particles with Spin in Inflation
Lorenzo Bordin, Paolo Creminelli, Andrei Khmelnitsky +1
The existence of light particles with spin during inflation is prohibited by the Higuchi bound. This conclusion can be evaded if one considers states with a sizeable coupling with…
Relaxing the Cosmological Constant: a Proof of Concept
Lasma Alberte, Paolo Creminelli, Andrei Khmelnitsky +2
We propose a technically natural scenario whereby an initially large cosmological constant (c.c.) is relaxed down to the observed value due to the dynamics of a scalar evolving on…
Solid Holography and Massive Gravity
Lasma Alberte, Matteo Baggioli, Andrei Khmelnitsky +1
Momentum dissipation is an important ingredient in condensed matter physics that requires a translation breaking sector. In the bottom-up gauge/gravity duality, this implies that t…
Density matrix of black hole radiation
Lasma Alberte, Ram Brustein, Andrei Khmelnitsky +1
Hawking's model of black hole evaporation is not unitary and leads to a mixed density matrix for the emitted radiation, while the Page model describes a unitary evaporation process…