TY  - THES
AU  - Miscioscia, Alessio
TI  - Thermal effects in conformal field theories
PB  - University of Hamburg
VL  - Dissertation
M1  - PUBDB-2025-03597
SP  - 205
PY  - 2025
N1  - Dissertation, University of Hamburg, 2025
AB  - Conformal Field Theories (CFTs) are special classes of quantum field theories thatfind applications ranging from critical phenomena to theories of quantum gravity viaholography. Understanding thermal effects in CFTs is crucial: criticality is experimen-tally probed at finite temperature, and, from the holographic perspective, the studyof thermal CFTs is dual to the study of black holes in Anti-de Sitter space. In thisthesis, we explore the kinematics and dynamics of finite-temperature CFTs by analyz-ing broken and unbroken symmetries and adapting various analytical and numericalbootstrap approaches to finite-temperature correlation functions. These methods arenon-perturbatively valid and can be tested against exactly solvable models, such asfree theories and two-dimensional systems, as well as compared with perturbative cal-culations. The main applications discussed in this thesis concern one- and two-pointfunctions and the free energy density in the O(N) models in three dimensions, withparticular focus on the 3d Ising, XY, and Heisenberg models (N = 1,2,3).
LB  - PUB:(DE-HGF)11
UR  - https://bib-pubdb1.desy.de/record/636042
ER  -