Sökning: "Schwinger terms"

Hittade 5 avhandlingar innehållade orden Schwinger terms.

1. 1. Schwinger terms from externalfield problems

   Författare :Christian Ekstrand; KTH; []
   Nyckelord :;

   Sammanfattning : .... LÄS MER

3. 2. Schwinger terms in external field problems

   Författare :Christian Ekstrand; KTH; []
   Nyckelord :;

   Sammanfattning : .... LÄS MER

4. 3. ρ-branes and PSDOs : on current algebras and their realizations

   Författare :Anders Westerberg; Chalmers tekniska högskola; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; extensions; current algebra; pseudodifferential operators; p-branes; cohomology; Schwinger terms;

   Sammanfattning : .... LÄS MER

5. 4. Non-Perturbative Quantum Field Theory in Extreme Environments

   Författare :Per Liljenberg; Chalmers tekniska högskola; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; pair production; Bose-Einstein condensation; functional representation; Schwinger model; external field; boson stars; temperature; magnetisation;

   Sammanfattning : The aim of this thesis is to describe some physical systems which can be treated by non-perturbative methods in quantum field theory. In the thesis we study systems described by quadratic Hamiltonians, possibly extended with an external electromagnetic field and/or with a thermal heat bath. LÄS MER

7. 5. Some Aspects of Non-Perturbative Quantum Field Theory

   Författare :Joakim Hallin; Chalmers tekniska högskola; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Yang-Mills; QED; pair production; density matrix; external field; Schwinger model; gauge invariant; functional representation;

   Sammanfattning : The aim of this thesis is to describe some different ways in which non-perturbative methods enter in quantum field theory. In the thesis such methods enter in 1+1-dimensional theories: various Yang-Mills theories and electrodynamics. It also enters when treating charged bosons or fermions interacting with an external, classical field. LÄS MER