6 papers
Equilibrium states for non relativistic Bose gases and the Gross-Pitaevskii limit
Stefano Galanda, Nicola Pinamonti
In this paper, we present the construction of equilibrium states for a gas of weakly interacting non-relativistic bosons, focusing on the case of a non-trivial background field in…
The Semiclassical Einstein-Klein-Gordon System: Asymptotic Analysis of Minkowski Spacetime
Stefano Galanda, Paolo Meda, Simone Murro +2
We establish the linear instability of the semiclassical Einstein-Klein-Gordon system linearised about the Minkowski vacuum spacetime. The proof relies on formulating a forcing pro…
Haag Duality in the Thermal Sector
Stefano Galanda, Leonardo Sangaletti
We prove that the net of localised von Neumann algebras associated with a real scalar field propagating on Minkowski spacetime, in the KMS representation, satisfies a generalised v…
Equilibrium states for non relativistic Bose gases with condensation
Stefano Galanda, Nicola Pinamonti
In this paper we present the construction of the equilibrium states at positive temperature in the presence of a condensation phase for a Gas of non relativistic Bose particles on…
Perturbative Construction of Equilibrium States for Interacting Fermionic Field Theories
Stefano Galanda
In this paper, we aim to extend to interacting massive and massless fermionic theories the recent perturbative construction of equilibrium states developed within the framework of…
Secular growths and their relation to equilibrium states in perturbative QFT
Stefano Galanda, Nicola Pinamonti, Leonardo Sangaletti
In the perturbative treatment of interacting quantum field theories, if the interaction Lagrangian changes adiabatically in a finite interval of time, secular growths may appear in…