Zobrazeno 1 - 10
of 976
pro vyhledávání: '"Cirafici A."'
Autor:
Cirafici, Michele
In this note we study nonequilibrium fluctuations in gravitational algebras within de Sitter space. An essential aspect of this study is quantum measurement theory, which allows us to access the dynamical fluctuations of observables via a two-point m
Externí odkaz:
http://arxiv.org/abs/2408.04219
Autor:
Cirafici, Michele
We explore nonequilibrium features of certain operator algebras which appear in quantum gravity. The algebra of observables in a black hole background is a Type $\mathrm{II}_\infty$ von Neumann algebra. We discuss how this algebra can be coupled to t
Externí odkaz:
http://arxiv.org/abs/2402.03939
Autor:
Cirafici, Michele
K3 surfaces play a prominent role in string theory and algebraic geometry. The properties of their enumerative invariants have important consequences in black hole physics and in number theory. To a K3 surface string theory associates an Elliptic gen
Externí odkaz:
http://arxiv.org/abs/2304.14105
Publikováno v:
Conservation Science in Cultural Heritage, Vol 23, Pp 235-259 (2024)
The reinterpretation of the architectural language of previous periods is commonplace in architecture and art history. Over the centuries, architectural thinking has consistently oscillated between two distinct trends: consciously revisiting architec
Externí odkaz:
https://doaj.org/article/76a3aa797748497f96aae1432ea51fee
Autor:
Cirafici, Michele
On certain M-theory backgrounds which are a circle fibration over a smooth Calabi-Yau, the quantum theory of M2 branes can be studied in terms of the K-theoretic Donaldson-Thomas theory on the threefold. We extend this relation to noncommutative crep
Externí odkaz:
http://arxiv.org/abs/2111.01102
Publikováno v:
Conservation Science in Cultural Heritage, Vol 22, Pp 181-206 (2023)
This article focuses on the Saharan vernacular houses in the Souf region (Algeria), from the point of view of their capacity to express local identity. An approach based on historical research methods (documentary research, iconography, etc.) and arc
Externí odkaz:
https://doaj.org/article/25dc25ea8d1b48be93e4e21cf0a7fa6b
Autor:
Cirafici, Michele
Publikováno v:
JHEP05(2021)224
In this note we consider the set of line operators in theories of class $S$. We show that this set carries the action of a natural discrete dynamical system associated with the BPS spectrum. We discuss several applications of this perspective; the re
Externí odkaz:
http://arxiv.org/abs/2011.12887
Autor:
Cirafici, Michele
In this note we study refined BPS invariants associated with certain quantum line defects in quantum field theories of class $\mathcal{S}$. Such defects can be specified via geometric engineering in the UV by assigning a path on a certain curve. In t
Externí odkaz:
http://arxiv.org/abs/1902.08586
Autor:
Cirafici, Michele
Publikováno v:
Confluentes Mathematici 9 (2017) 2, 71-99
In this note we review some of the uses of framed quivers to study BPS invariants of Donaldson-Thomas type. We will mostly focus on non-compact Calabi-Yau threefolds. In certain cases the study of these invariants can be approached as a generalized i
Externí odkaz:
http://arxiv.org/abs/1801.03778
Autor:
Michele Cirafici, Michele Del Zotto
Publikováno v:
Journal of High Energy Physics, Vol 2022, Iss 7, Pp 1-67 (2022)
Abstract It is possible to understand whether a given BPS spectrum is generated by a relevant deformation of a 4D N $$ \mathcal{N} $$ = 2 SCFT or of an asymptotically free theory from the periodicity properties of the corresponding quantum monodromy.
Externí odkaz:
https://doaj.org/article/4868453cb8a44dde9567e8556a2f5b0f