30 citations · 206 across the 32 of their papers we have counts for
33 papers
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…
Finite relative entropy for locally squeezed states
Daniela Cadamuro, Markus B. Fröb, Dimitrios Katsinis +1
Relative entropy serves as a fundamental measure of state distinguishability in both quantum information theory and relativistic quantum field theory. Despite its conceptual import…
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…
Modular Hamiltonian for fermions of small mass
Daniela Cadamuro, Markus B. Fröb, Christoph Minz
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 Hamiltonia…
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…
High energy bounds on wave operators
Henning Bostelmann, Daniela Cadamuro, Gandalf Lechner
The wave operators of two selfadjoint operators and are analyzed at asymptotic spectral values. Sufficient conditions for $\|(W_\pm(H_1,H_0)-P_{1}^\mat…
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…
Quantum backflow in scattering situations
Daniela Cadamuro
Measurable quantities that have positive values in classical dynamical systems need not to be positive in quantum theory. For example, consider a free quantum mechanical particle i…
Quantum Rate-Distortion Coding of Relevant Information
Sina Salek, Daniela Cadamuro, Philipp Kammerlander +1
Rate-distortion theory provides bounds for compressing data produced by an information source to a specified encoding rate that is strictly less than the source's entropy. This nec…
Quantum backflow and scattering
Henning Bostelmann, Daniela Cadamuro, Gandalf Lechner
Backflow is the phenomenon that the probability current of a quantum particle on the line can flow in the direction opposite to its momentum. In this article, previous investigatio…
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…