Fock space and probability theory

1987 ◽  
pp. 160-170 ◽  
Author(s):  
P. A. Meyer
Keyword(s):  
Probability Theory ◽  
Fock Space

scholarly journals THE MASTER FIELD FOR LARGE-N MATRIX MODELS AND QUANTUM GROUPS

1995 ◽  
Vol 10 (31) ◽  
pp. 2323-2333 ◽  
Author(s):  
L. ACCARDI ◽  
I.YA. AREF’EVA ◽  
S.V. KOZYREV ◽  
I.V. VOLOVICH
Keyword(s):  
Field Theory ◽  
Probability Theory ◽  
Coherent States ◽  
Fock Space ◽  
Central Element ◽  
Field Theories ◽  
Noncommutative Probability ◽  
Field Algebra ◽  
Algebra Of Functions ◽  
Large N

In recent works by Singer, Douglas, Gopakumar and Gross an application of results of Voiculescu from noncommutative probability theory to constructions of the master field for large-N matrix field theories have been suggested. It turns out that this master field becomes the Boltzmann field in the free Fock space. In this note we consider interrelations between the master field and quantum semigroups. We define the master field algebra and observe that it is isomorphic to the algebra of functions on the quantum semigroup SU q(2) for q=0. The master field becomes a central element of the quantum group bialgebra. The quantum Haar measure on the SU q(2) for any q gives the Wigner semicircle distribution for the master field. Coherent states on SU q(2) become coherent states in the master field theory.

scholarly journals CUMULANTS IN NONCOMMUTATIVE PROBABILITY THEORY III: CREATION AND ANNIHILATION OPERATORS ON FOCK SPACES

2005 ◽  
Vol 08 (03) ◽  
pp. 407-437 ◽  
Author(s):  
FRANZ LEHNER
Keyword(s):  
Probability Theory ◽  
Symmetric Group ◽  
Toeplitz Operators ◽  
Fock Space ◽  
Random Variables ◽  
Fock Spaces ◽  
Noncommutative Probability ◽  
Infinite Symmetric Group ◽  
Fock States ◽  
Cycle Indicator

Exchangeability systems arising from Fock space constructions are considered and the corresponding cumulants are computed for generalized Toeplitz operators and similar noncommutative random variables. In particular, simplified calculations are given for the two known examples of q-cumulants. In the second half of the paper we consider in detail the Fock states associated to characters of the infinite symmetric group recently constructed by Bożejko and Guta. We express moments of multidimensional Dyck words in terms of the so-called cycle indicator polynomials of certain digraphs.

Probability Theory for Fuzzy Quantum Spaces with Statistical Applications

2017 ◽  
Author(s):  
Renáta Bartková ◽  
Beloslav Riečan ◽  
Anna Tirpáková
Keyword(s):  
Probability Theory ◽  
Fuzzy Sets ◽  
Ergodic Theorem ◽  
Intuitionistic Fuzzy Sets ◽  
Mathematics Students ◽  
Intuitionistic Fuzzy ◽  
Individual Ergodic Theorem ◽  
Recurrence Theorem ◽  
The Individual ◽  
Atanassov Intuitionistic Fuzzy Sets

The reference considers probability theory in two main domains: fuzzy set theory, and quantum models. Readers will learn about the Kolmogorov probability theory and its implications in these two areas. Other topics covered include intuitionistic fuzzy sets (IF-set) limit theorems, individual ergodic theorem and relevant statistical applications (examples from correlation theory and factor analysis in Atanassov intuitionistic fuzzy sets systems, the individual ergodic theorem and the Poincaré recurrence theorem). This book is a useful resource for mathematics students and researchers seeking information about fuzzy sets in quantum spaces.

Arguments from Providence and from Miracles

2018 ◽  
Author(s):  
Timothy McGrew
Keyword(s):  
Probability Theory ◽  
20Th Century ◽  
Probabilistic Analysis ◽  
Interdisciplinary Collaboration ◽  
Formal Analysis ◽  
Empirical Science ◽  
The Subject

The mid-20th century consensus regarding Hume’s critique of reported miracles has broken down dramatically in recent years thanks to the application of probabilistic analysis to the issue and the rediscovery of its history. Progress from this point forward is likely to be made along one or more of three fronts. There is wide room for interdisciplinary collaboration, work that will bring together scholars with expertise in religion, psychology, philosophy, and empirical science. There is a great deal of work still to be done in formal analysis, making use of the tools of modern probability theory to model questions about testimony and inference. And the recovery and study of earlier works on the subject—works that should never have been forgotten—can significantly enrich our understanding of the underlying issues.

The Non-Causal Character of Renormalization Group Explanations

2018 ◽  
Author(s):  
Margaret Morrison
Keyword(s):  
Probability Theory ◽  
Renormalization Group ◽  
Dynamical Systems ◽  
Recent Literature ◽  
Mathematical Explanation ◽  
Causal Status ◽  
Physical Information ◽  
The Relationship ◽  
Structural Aspects

After reviewing some of the recent literature on non-causal and mathematical explanation, this chapter develops an argument as to why renormalization group (RG) methods should be seen as providing non-causal, yet physical, information about certain kinds of systems/phenomena. The argument centres on the structural character of RG explanations and the relationship between RG and probability theory. These features are crucial for the claim that the non-causal status of RG explanations involves something different from simply ignoring or “averaging over” microphysical details—the kind of explanations common to statistical mechanics. The chapter concludes with a discussion of the role of RG in treating dynamical systems and how that role exemplifies the structural aspects of RG explanations which in turn exemplifies the non-causal features.

Philosophical Papers

2019 ◽  
Author(s):  
Paul Humphreys
Keyword(s):  
Probability Theory ◽  
Computer Simulations ◽  
Social Dynamics ◽  
Scientific Explanation ◽  
Contemporary Literature ◽  
Unpublished Paper ◽  
Agent Based ◽  
Philosophical Investigations ◽  
The Status ◽  
Original Presentation

Paul Humphreys pioneered philosophical investigations into the methodological revolution begun by computer simulations. He has also made important contributions to the contemporary literature on emergence by developing the fusion account of diachronic emergence and its generalization, transformational emergence. He is the discoverer of what has come to be called “Humphreys” Paradox in probability theory and has also made influential contributions to the literature on probabilistic causality and scientific explanation. This collection contains fourteen of his previously published papers on topics ranging from numerical experiments to the status of scientific metaphysics. There is also and a previously unpublished paper on social dynamics. The volume is divided into four parts on, respectively, computational science, emergence, probability, and general philosophy of science. The first part contains the seminal 1990 paper on computer simulations, with three other papers arguing that these new methods cannot be accounted for by traditional methodological approaches. The second part contains the original presentation of fusion emergence and three companion papers arguing for diachronic approaches to the topic, rather than the then dominant synchronic accounts. The third part starts with the paper that introduced the probabilistic paradox followed by a later evaluation of attempts to solve it. A third paper argues, contra Quine, that probability theory is a purely mathematical theory. The final part includes papers on causation, explanation, metaphysics, and an agent-based model that shows how endogenous uncertainty undermines utility maximization. Each of the four parts is followed by a comprehensive postscript with retrospective assessments.

Introduction

2017 ◽  
Author(s):  
Jochen Rau
Keyword(s):  
Probability Theory ◽  
Phase Transitions ◽  
Statistical Mechanics ◽  
Conservation Laws ◽  
Law Of Large Numbers ◽  
Macroscopic Scale ◽  
Classical Probability ◽  
Large Numbers ◽  
Microscopic World ◽  
New Phenomena

Statistical mechanics concerns the transition from the microscopic to the macroscopic realm. On a macroscopic scale new phenomena arise that have no counterpart in the microscopic world. For example, macroscopic systems have a temperature; they might undergo phase transitions; and their dynamics may involve dissipation. How can such phenomena be explained? This chapter discusses the characteristic differences between the microscopic and macroscopic realms and lays out the basic challenge of statistical mechanics. It suggests how, in principle, this challenge can be tackled with the help of conservation laws and statistics. The chapter reviews some basic notions of classical probability theory. In particular, it discusses the law of large numbers and illustrates how, despite the indeterminacy of individual events, statistics can make highly accurate predictions about totals and averages.

Imposing Risk

2017 ◽  
Author(s):  
John Oberdiek
Keyword(s):  
Probability Theory ◽  
Normative Framework

Any normative framework of risk imposition must include at its foundation an account of the nature of risk imposition. If risk is understood as the probability of a bad event or harm, the menu of conceptions of risk would seem to be exhausted by the various accounts of probability that have been developed. The two main families of probability theory, objective and subjective, have opposite strengths and weaknesses as candidate conceptions of probability suitable for a normative framework of risk imposition. This chapter argues that objective accounts are suitably normative but insufficiently practical, while unreconstructed subjective accounts are suitably practical but insufficiently normative, and this casts doubt on the project of identifying a conception of risk that is suitable for a normative framework of risk imposition.

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