High-temperature expansions in continuum quantum field theory
نویسندگان
چکیده
منابع مشابه
Quantum phase transitions in spin systems and the high temperature limit of continuum quantum field theories
We study the finite temperature crossovers in the vicinity of a zero temperature quantum phase transition. The universal crossover functions are observables of a continuum quantum field theory. Particular attention is focussed on the high temperature limit of the continuum field theory, the socalled “quantum-critical” region. Basic features of crossovers are illustrated by a simple solvable mod...
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Methods of summation of power series relevant to applications in quantum theory are reviewed, with particular attention to expansions in powers of the coupling constant and in inverse powers of an energy variable. Alternatives to the Borel summation method are considered and their relevance to different physical situations is discussed. Emphasis is placed on quantum chromodynamics. Applications...
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ژورنال
عنوان ژورنال: Physica A: Statistical Mechanics and its Applications
سال: 1987
ISSN: 0378-4371
DOI: 10.1016/0378-4371(87)90265-2