Zobrazeno 1 - 10
of 3 727
pro vyhledávání: '"Karl, Hermann"'
In this short note we discuss the existence of singular points for the exponential function of a semidirect product Lie group close to $0$. As an application, we prove that the Bondi-Metzner-Sachs group of symmetries of an asymptotically flat spaceti
Externí odkaz:
http://arxiv.org/abs/2408.15053
We develop a novel perspective on reflection positivity (RP) on the strip by systematically developing the analogies with the unit disc and the upper half plane in the complex plane. These domains correspond to the three conjugacy classes of one-para
Externí odkaz:
http://arxiv.org/abs/2407.21123
Hilbert--Lie groups are Lie groups whose Lie algebra is a real Hilbert space whose scalar product is invariant under the adjoint action. These infinite-dimensional Lie groups are the closest relatives to compact Lie groups. Here we study unitary repr
Externí odkaz:
http://arxiv.org/abs/2402.13619
This paper builds on our previous work in which we showed that, for all connected semisimple linear Lie groups $G$ acting on a non-compactly causal symmetric space $M = G/H$, every irreducible unitary representation of $G$ can be realized by boundary
Externí odkaz:
http://arxiv.org/abs/2401.17140
Various aspects of the geometric setting of Algebraic Quantum Field Theory (AQFT) models related to representations of the Poincar\'e group can be studied for general Lie groups, whose Lie algebra contains an Euler element, i.e., ad h is diagonalizab
Externí odkaz:
http://arxiv.org/abs/2312.12182
Autor:
Ioannis Kafetzis, Karl-Hermann Fuchs, Philipp Sodmann, Joel Troya, Wolfram Zoller, Alexander Meining, Alexander Hann
Publikováno v:
Scientific Reports, Vol 14, Iss 1, Pp 1-10 (2024)
Abstract Standardized assessment of the gastroesophageal valve during endoscopy, attainable via the Hill classification, is important for clinical assessment and therapeutic decision making. The Hill classification is associated with the presence of
Externí odkaz:
https://doaj.org/article/d37369e713454adfb7d9d14eb601dca3
We continue our investigation of the interplay between causal structures on symmetric spaces and geometric aspects of Algebraic Quantum Field Theory. We adopt the perspective that the geometric implementation of the modular group is given by the flow
Externí odkaz:
http://arxiv.org/abs/2307.00798