Noncommutative Lp-Spaces and Perturbations of KMS States

Correa da Silva R (2018)


Publication Language: English

Publication Type: Thesis

Publication year: 2018

URI: https://teses.usp.br/teses/disponiveis/43/43134/tde-21082018-225801/en.php

Abstract

We extend the theory of perturbations of KMS states to some class of unbounded perturbations using noncommutative Lp-spaces. We also prove certain stability of the domain of the Modular Operator associated to a p-continuous state. This allows us to define an analytic multiple-time KMS condition and to obtain its analyticity together with some bounds to its norm. The main results are Theorem 5.1.15, Theorem 5.1.16 and Corollary 5.1.18. Apart from that, this work contains a detailed review, with minor contributions due to the author, starting with the description of C*-algebras and von Neumann algebras followed by weights and representations, a whole chapter is devoted to the study of KMS states and its physical interpretation as the states of thermal equilibrium, then the Tomita-Takesaki Modular Theory is presented, furthermore, we study analytical properties of the modular operator automorphism group, positive cones and bounded perturbations of states, and finally we start presenting multiple versions of noncommutative Lp-spaces.

Authors with CRIS profile

Involved external institutions

How to cite

APA:

Correa da Silva, R. (2018). Noncommutative Lp-Spaces and Perturbations of KMS States (Dissertation).

MLA:

Correa da Silva, Ricardo. Noncommutative Lp-Spaces and Perturbations of KMS States. Dissertation, 2018.

BibTeX: Download