30 citations · 206 across the 32 of their papers we have counts for
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Numerical approach to the modular operator for fermionic systems
Henning Bostelmann, Daniela Cadamuro, Christoph Minz
We numerically approximate the Tomita-Takesaki modular operator for local subalgebras of the 1+1-dimensional massive Majorana field. Our method works at the one-particle level with…
Quantum inequalities in thermal states
Henning Bostelmann, Daniela Cadamuro, Leonardo Sangaletti
In thermal quantum field theory, the global Liouvillian (the generator of time translations) is passive. How is this reflected in the properties of its local density, a quantum fie…
Modular Hamiltonian and modular flow of massless fermions on a cylinder
Daniela Cadamuro, Markus B. Fröb, Guillem Pérez-Nadal
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 antiperio…
The Sine-Gordon QFT in de Sitter spacetime
Daniela Cadamuro, Markus B. Fröb, Carolina Moreira Ferrera
We consider the massless Sine-Gordon model in de Sitter spacetime, in the regime and using the framework of perturbative algebraic quantum field theory. We show that a…
The massive modular Hamiltonian for a double cone
Daniela Cadamuro
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 e…
Quantum energy inequalities in integrable models with several particle species and bound states
Henning Bostelmann, Daniela Cadamuro, Jan Mandrysch
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 res…
A quantum energy inequality in the Sine--Gordon model
Markus B. Fröb, Daniela Cadamuro
We consider the stress tensor in the massless Sine--Gordon model in the finite regime of the theory. We prove convergence of the renormalised perturbative series for th…
On the mass dependence of the modular operator for a double cone
Henning Bostelmann, Daniela Cadamuro, Christoph Minz
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 t…
Local operators in the Sine-Gordon model: and the stress tensor
Markus B. Fröb, Daniela Cadamuro
We consider the simplest non-trivial local composite operators in the massless Sine-Gordon model, which are and the stress tensor . We show that…
Fermionic integrable models and graded Borchers triples
Henning Bostelmann, Daniela Cadamuro
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 b…
Relative entropy of coherent states on general CCR algebras
Henning Bostelmann, Daniela Cadamuro, Simone Del Vecchio
For a subalgebra of a generic CCR algebra, we consider the relative entropy between a general (not necessarily pure) quasifree state and a coherent excitation thereof. We give a un…
Operator-algebraic construction of the deformed Sine-Gordon model
Daniela Cadamuro
We consider the construction of integrable quantum field theories in the operator-algebraic approach, which is based on quantum fields localized in infinitely extended wedge region…
Energy inequalities in interacting quantum field theories
Daniela Cadamuro
The classical energy conditions, originally motivated by the Penrose-Hawking singularity theorems of general relativity, are violated by quantum fields. A reminiscent notion of suc…
Curing velocity superselection in non-relativistic QED by restriction to a lightcone
Daniela Cadamuro, Wojciech Dybalski
It is physically expected that plane-wave configurations of the electron in QED induce disjoint representations of the algebra of the electromagnetic fields. This phenomenon of vel…
Relative normalizers of automorphism groups, infravacua and the problem of velocity superselection in QED
Daniela Cadamuro, Wojciech Dybalski
We advance superselection theory of pure states on a -algebra outside of the conventional (DHR) setting. First, we canonically define conjugate and second conju…
Direct construction of pointlike observables in the Ising model
Daniela Cadamuro
The construction of pointlike fields in quantum integrable models is usually approached by constructing their n-point functions. However, convergence questions of the resulting inf…
Towards an explicit construction of local observables in integrable quantum field theories
Henning Bostelmann, Daniela Cadamuro
We present a new viewpoint on the construction of pointlike local fields in integrable models of quantum field theory. As usual, we define these local observables by their form fac…
Wedge-local observables in the deformed sine-Gordon model
Daniela Cadamuro, Yoh Tanimoto
In the bootstrap approach to integrable quantum field theories in the (1+1)-dimensional Minkowski space, one conjectures the two-particle S-matrix and tries to study local observab…
Wedge-local fields in interacting quantum field theories with bound states
Daniela Cadamuro
In the context of constructing interacting quantum field theories in the operator-algebraic approach, wedge-local fields play an important role. After the work of Lechner to constr…
Wedge-local fields in integrable models with bound states II. Diagonal S-matrix
Daniela Cadamuro, Yoh Tanimoto
We construct candidates for observables in wedge-shaped regions for a class of 1+1-dimensional integrable quantum field theories with bound states whose S-matrix is diagonal, by ex…
Quantum energy inequalities in integrable quantum field theories
Daniela Cadamuro
In a large class of factorizing scattering models, we construct candidates for the local energy density on the one-particle level starting from first principles, namely from the ab…
Negative energy densities in integrable quantum field theories at one-particle level
Henning Bostelmann, Daniela Cadamuro
We study the phenomenon of negative energy densities in quantum field theories with self-interaction. Specifically, we consider a class of integrable models (including the sinh-Gor…
Wedge-local fields in integrable models with bound states
Daniela Cadamuro, Yoh Tanimoto
Recently, large families of two-dimensional quantum field theories with factorizing S-matrices have been constructed by the operator-algebraic methods, by first showing the existen…
Characterization of local observables in integrable quantum field theories
Henning Bostelmann, Daniela Cadamuro
Integrable quantum field theories in 1+1 dimensions have recently become amenable to a rigorous construction, but many questions about the structure of their local observables rema…