J
Jürg Fröhlich
Researcher at ETH Zurich
Publications - 360
Citations - 21553
Jürg Fröhlich is an academic researcher from ETH Zurich. The author has contributed to research in topics: Quantum field theory & Gauge theory. The author has an hindex of 79, co-authored 352 publications receiving 20169 citations. Previous affiliations of Jürg Fröhlich include Institut des Hautes Études Scientifiques & Institute for Advanced Study.
Papers
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Journal ArticleDOI
Lie–Schwinger Block-Diagonalization and Gapped Quantum Chains
Jürg Fröhlich,Alessandro Pizzo +1 more
TL;DR: In this paper, the spectral gap of the perturbed Hamiltonian above its ground-state energy is bounded from below by a positive constant uniformly in the length of the chain, for small values of a coupling constant.
Book ChapterDOI
A Brief Review of the “ETH-Approach to Quantum Mechanics”
TL;DR: In this article, a sketch of the "ETH-Approach to Quantum Mechanics" is presented, which yields a logically coherent quantum theory of "events" featured by isolated physical systems and of direct or projective measurements of physical quantities, without the need to invoke "observators".
Journal ArticleDOI
The pure phases, the irreducible quantum fields, and dynamical symmetry breaking in Symanzik-Nelson positive quantum field theories
TL;DR: In this paper, it was shown that a Symanzik-nelson positive quantum field theory has a unique decomposition into pure phases which preserves Symanik-Nelson positivity and Poincare covariance.
Journal ArticleDOI
Absence of symmetry breaking for $N$-vector spin glass models in two dimensions
van Aernout Enter,Jürg Fröhlich +1 more
TL;DR: The absence of continuous symmetry breaking at arbitrary temperatures for two-dimensionalN-vector spin glass models with Hamilton function is proved.
Journal ArticleDOI
Exponential Relaxation to Equilibrium for a One-Dimensional Focusing Non-Linear Schrödinger Equation with Noise
TL;DR: In this article, generalized grand-canonical and canonical Gibbs measures for a Hamiltonian system described in terms of a complex scalar field that is defined on a circle and satisfies a nonlinear Schrodinger equation with a focusing nonlinearity of order p < 6.