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of 183
pro vyhledávání: '"Pinamonti, Nicola"'
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 the truncated perturbative series also when the interaction Lagrangia
Externí odkaz:
http://arxiv.org/abs/2312.00556
Autor:
D'Angelo, Edoardo, Pinamonti, Nicola
We prove local existence of solutions of a functional Renormalisation Group equation for the effective action of an interacting quantum field theory, when a suitable Local Potential Approximation is considered. To obtain this equation in a Lorentzian
Externí odkaz:
http://arxiv.org/abs/2310.20596
Publikováno v:
Ann. Henri Poincar\'e (2023)
We discuss the scaling of the effective action for the interacting scalar quantum field theory on generic spacetimes with Lorentzian signature and in a generic state (including vacuum and thermal states, if they exist). This is done constructing a fl
Externí odkaz:
http://arxiv.org/abs/2202.07580
Autor:
Meda, Paolo, Pinamonti, Nicola
Publikováno v:
Annales Henri Poincar\'e (2022)
The linearization of semiclassical theories of gravity is investigated in a toy model, consisting of a quantum scalar field in interaction with a second classical scalar field which plays the role of a classical background. This toy model mimics also
Externí odkaz:
http://arxiv.org/abs/2201.10288
In this paper we investigate the massive Sine-Gordon model in the ultraviolet finite regime in thermal states over the two-dimensional Minkowski spacetime. We combine recently developed methods of perturbative algebraic quantum field theory with tech
Externí odkaz:
http://arxiv.org/abs/2103.09328
Publikováno v:
Classical and Quantum Gravity (2021)
We study the evaporation of a four-dimensional spherically symmetric black hole formed in a gravitational collapse. We analyze the back-reaction of a massless quantum scalar field conformally coupled to the scalar curvature by means of the semiclassi
Externí odkaz:
http://arxiv.org/abs/2103.02057
Publikováno v:
Letters in Mathematical Physics 111 (2021) No 110 (open access)
We consider spherically symmetric spacetimes with an outer trapping horizon. Such spacetimes are generalizations of spherically symmetric black hole spacetimes where the central mass can vary with time, like in black hole collapse or black hole evapo
Externí odkaz:
http://arxiv.org/abs/2102.11547
We prove existence and uniqueness of solutions of the semiclassical Einstein equation in flat cosmological spacetimes driven by a quantum massive scalar field with arbitrary coupling to the scalar curvature. In the semiclassical approximation, the ba
Externí odkaz:
http://arxiv.org/abs/2007.14665
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Publikováno v:
In Journal of Mathematical Analysis and Applications 15 October 2023 526(2)
