Showing papers by "Jürg Fröhlich published in 1987"
TL;DR: In this article, the authors extended the Osterwalder-Schrader reconstruction to theories with topological solitons and analyzed the particle structure in the soliton sectors of such theories.
Abstract: Quantization of solitons in terms of Euclidean region functional integrals is developed, and Osterwalder-Schrader reconstruction is extended to theories with topological solitons. The quantization method is applied to several lattice field theories with solitons, and the particle structure in the soliton sectors of such theories is analyzed. A construction of magnetic monopoles in the four-dimensional, compactU(1)-model, in the QED phase, is indicated as well.
99 citations
TL;DR: In this article, the equilibrium statistical mechanics of the semi-infinite Ising model, interpreted as a model of a binary system near a wall, are studied and the wetting transition is analyzed.
Abstract: We study the equilibrium statistical mechanics of the semi-infinite Ising model, interpreted as a model of a binary system near a wall. In particular, the wetting transition is analyzed. In dimensionsd≧3 and at low temperature, we prove the existence of a layering transition which is of first-order.
52 citations
TL;DR: In this paper, the authors analyse discretized string theories, where the path integral over world sheet variables is regularized by summing over triangulated surfaces, and show that the string tension vanishes at the critical point where the bare extrinsic curvature coupling tends to infinity.
48 citations
TL;DR: In this article, the equilibrium statistical mechanics of the semi-infinite Ising model, interpreted as a model of a binary system near a wall, are studied and the wetting transition is analyzed.
Abstract: We study the equilibrium statistical mechanics of the semi-infinite Ising model, interpreted as a model of a binary system near a wall. In particular, the wetting transition is analyzed. In dimensionsd≧3 and at low temperature, we prove the existence of a layering transition which is of first-order.
48 citations
TL;DR: In this article, the high-temperature phase of long-range Ising-and N-vector spin glasses with exchange couplings was analyzed and the quenched average of the square of connected correlations was shown to be unique for sufficiently high temperatures.
Abstract: We analyze the high-temperature phase of long-range Ising- andN-vector spin glasses with exchange couplings {J
ij
},i, j∈Z
d
, which are independent random variables withJ
ij
=0 and
$$|\overline {J_{^{ij} }^p } |\underset{\raise0.3em\hbox{$\smash{\scriptscriptstyle-}$}}{ \leqslant } \gamma ^p p!|i - j|^{ - p\alpha d} ,p = 2, 3, ..., \gamma $$
is a finite constant and α>1/2. We show that, for sufficiently high temperatures, the equilibrium state in the thermodynamic limit is (weakly) unique, and the quenched average of the square of connected correlations 〈σ
A
; σ
B
〉β decays like (A, B)−αd
, despite of Griffiths singularities and the non-summable range ofJ
ij
(for
$$\tfrac{1}{2}< \alpha \underset{\raise0.3em\hbox{$\smash{\scriptscriptstyle-}$}}{ \leqslant } 1$$
).
29 citations
TL;DR: In this paper, Antonov's rule for the Ising model on a half-infinite lattice is discussed and the existence of the wetting and a layering transition in this system is established.
Abstract: We discuss Antonov's rule for the Ising model on a half-infinite lattice and establish the existence of the wetting- and a layering transition in this system.
22 citations
TL;DR: In this paper, a self-contained analysis of the pseudoscalar meson masses in lattice QCD is presented, which is related to the susceptibility of a lattice analog of the topological charge density.
16 citations
TL;DR: In this article, the meson and baryon spectrum analysis of lattice QCD has been studied, and some basic tools for an analysis of the spectrum have been presented.
15 citations