4 papers · 1 filter
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…
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 sho…
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 $β^2 < 4 Ï$ and using the framework of perturbative algebraic quantum field theory. We show that…
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…