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The renormalisation group and effective field theories [PDF]

Synthese, 1995
Much apprehension has been expressed by philosophers about the method of renormalisation in quantum field theory, as it apparently requires illegitimate procedure of infinite cancellation. This has lead to various speculations, in particular in Teller (1989). We examine Teller's discussion of perturbative renormalisation of quantum fields, and show why
Robert Weingard, Nick Huggett
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Exotic Galileian group in field theory

Journal of Mathematical Sciences, 2006
Using the properties of Seiberg-Witten map the author establishes an interpretation of the exotic Galileian group of families of non-relativistic field theories on a noncommutative plane. Also the description for the class of self-interaction theories is provided.
openaire   +4 more sources

Group Theory and Crystal Field Theory

1961
Publisher Summary The chapter describes crystal field theory that concerns with an attempt to calculate as much as possible about the behavior of solids on the basis of a known or assumed symmetry of the problem and with the simplifying assumption that the interaction between the ion or atom of interest and its nearest neighbors is electrostatic in ...
Paul H. E. Meijer, Charles M. Herzfeld
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Lie groups and thermal field theory

Physics Letters A, 1995
Considering basic ingredients of the so-called thermofield dynamics associated with a Lie algebra, L, an algebra, LT, is derived using the first kind of solution of the modified Yang-Baxter equation. LT has a double algebraic structure and represents a new possibility of representations for Lie symmetries associated with the thermal phenomena.
Faqir C. Khanna, Faqir C. Khanna, Ademir E Santana, Ademir E Santana   +3 more
openaire   +2 more sources

Polchinski's equation for group field theory

Fortschritte der Physik, 2014
AbstractWe derive an exact renormalization group equation in the context of (colored) group field theories. This equation describes the variation of the effective action as some of the modes of the fields are integrated out. From a combinatorial point of view, the effective action can be expressed using a boundary triangulation and the corresponding ...
Krajewski, Thomas, Toriumi, Reiko
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Group Contraction in Quantum Field Theory

International Journal of Theoretical Physics, 2007
Group contraction plays a relevant role in spontaneously broken symmetry theories. Its physical meaning in connection with Bose condensation and the origin of macroscopic quantum systems is discussed.
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quantum field theory as group algebra

Reports on Mathematical Physics, 1976
Abstract A group theoretical approach to dynamical quantization in general, and quantum field theory in particular, is developed. This approach opens possibilities of new quantization schemes. Some of these schemes are discussed in detail. They offer certain advantages such as relaxation of the conventional principles of unitarity and causality on ...
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Cancer statistics for African American/Black People 2022

Ca-A Cancer Journal for Clinicians, 2022
Angela Giaquinto, Kimberly D Miller, Rebecca L Siegel   +2 more
exaly  

Integrative oncology: Addressing the global challenges of cancer prevention and treatment

Ca-A Cancer Journal for Clinicians, 2022
Jun J Mao,, Msce, Lorenzo Cohen, Karen M Mustian   +2 more
exaly