挑剔为人
发表于 2025-3-23 10:18:21
Weak Coupling Limit: Feynman Diagrams, the Feynman- diagrammatic description of the individual terms in the Dyson perturbative expansion, which is one aspect of the study., joint work with T.G.Ho and A.J.Wilkins. (See reference. for technical details concerning self-adjointness of the Hamiltonian, and control of the perturbative expansi
武器
发表于 2025-3-23 17:28:21
Limit Laws for Recurrence Times in Expanding Maps of an Interval,he beginning of the century about the period of Poincaré recurrence. As for many questions in ergodic theory, the main step came much later with Birkhoff’s ergodic theorem. We recall that if we have a space . equipped with a σ-algebra . and a measure . on this σ-algebra which is invariant and ergodi
Obliterate
发表于 2025-3-23 18:27:41
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老人病学
发表于 2025-3-24 00:10:02
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渗透
发表于 2025-3-24 02:48:10
Interacting Particle Systems on Non-Commutative Spaces,on a .*- algebra always means a(continuous time) semigroup of completely positive maps. We will discuss the construction of Markov semigroups on UHF .*-algebras, their ergodicity and the nature of invariant states.
ANT
发表于 2025-3-24 07:52:32
Non-Self-Averaging Effects in Sums of Random Variables, Spin Glasses, Random Maps and Random Walks, spin glasses, random map models and returns of a random walk to the origin. We will see that the non- self-averaging effects are identical in the case of sums of random variables and in the spin glass problem as predicted by the replica approach. Also we will see that for the random map models or f
Cardioplegia
发表于 2025-3-24 10:48:48
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马笼头
发表于 2025-3-24 17:04:14
Semi-Classical Inelastic S-Matrix for One-Dimensional N-States Systems,, and a large body of the literature is devoted to the subject (see e.g. ). The calculation of inelastic scattering S-matrix elements (at least in the spherical symmetric case) proceeds usually in two steps: i) The reduction of the second order coupled channel equations to a first order “common t
dissolution
发表于 2025-3-24 21:43:32
Gibbsian versus Non-Gibbsian Measures: Some Results and Some Questions in Renormalization Group Thevide various examples, involving systems not necessarily in the vicinity of a phase transition, where this can not be done, because Gibbs measures under the action of various real-space transformations become non-Gibbsian. We mention some related issues occurring in non-equilibrium problems.
不真
发表于 2025-3-24 23:59:29
Stabilities and Instabilities in Classical Lattice Gas Models without Periodic Ground States, configurations. We discuss lattice gas models with stable and unstable nonperiodic ground states. The crystal problem is an attempt to deduce, within statistical mechanics, periodic order in systems of many interacting particles. Our model with a unique stable nonperiodic ground state constitutes a