Zobrazeno 1 - 10
of 84
pro vyhledávání: '"Cadamuro, Daniela"'
We determine explicitly the modular flow and the modular Hamiltonian for massless free fermions in diamonds on a cylinder in 1+1 dimensions. We consider both periodic and antiperiodic boundary conditions, the ground state in the antiperiodic case and
Externí odkaz:
http://arxiv.org/abs/2406.19360
We consider the massless Sine-Gordon model in de Sitter spacetime, in the regime $\beta^2 < 4 \pi$ and using the framework of perturbative algebraic quantum field theory. We show that a Fock space representation exists for the free massless field, bu
Externí odkaz:
http://arxiv.org/abs/2404.12324
Autor:
Cadamuro, Daniela
The Tomita-Takesaki modular operator for local algebras plays an important role in quantum field theory, and more recently in the study of relative entropy. However, the explicit expression of this operator, except for the case of wedges, is difficul
Externí odkaz:
http://arxiv.org/abs/2312.08525
We consider the algebra of massive fermions restricted to a diamond in two-dimensional Minkowski spacetime, and in the Minkowski vacuum state. While the massless modular Hamiltonian is known for this setting, the derivation of the massive one is an o
Externí odkaz:
http://arxiv.org/abs/2312.04629
Publikováno v:
Ann. Henri Poincar\'e (2024)
We investigate lower bounds to the time-smeared energy density, so-called quantum energy inequalities (QEI), in the class of integrable models of quantum field theory. Our main results are a state-independent QEI for models with constant scattering f
Externí odkaz:
http://arxiv.org/abs/2302.00063
Autor:
Fröb, Markus B., Cadamuro, Daniela
We consider the stress tensor in the massless Sine--Gordon model in the finite regime $\beta^2 < 4 \pi$ of the theory. We prove convergence of the renormalised perturbative series for the interacting stress tensor defined using the Bogoliubov formula
Externí odkaz:
http://arxiv.org/abs/2212.07377
Publikováno v:
Annales Henri Poincar\'e (2023)
We present a numerical approximation scheme for the Tomita-Takesaki modular operator of local subalgebras in linear quantum fields, working at one-particle level. This is applied to the local subspaces for double cones in the vacuum sector of a massi
Externí odkaz:
http://arxiv.org/abs/2209.04681
Autor:
Fröb, Markus B., Cadamuro, Daniela
We consider the simplest non-trivial local composite operators in the massless Sine-Gordon model, which are $\partial_\mu \phi \, \partial_\nu \phi$ and the stress tensor $T_{\mu\nu}$. We show that even in the finite regime $\beta^2 < 4 \pi$ of the t
Externí odkaz:
http://arxiv.org/abs/2205.09223
Autor:
Bostelmann, Henning, Cadamuro, Daniela
We provide an operator-algebraic construction of integrable models of quantum field theory on 1+1 dimensional Minkowski space with fermionic scattering states. These are obtained by a grading of the wedge-local fields or, alternatively, of the underl
Externí odkaz:
http://arxiv.org/abs/2112.14686