Sökning: "Per Liljenberg"

Hittade 3 avhandlingar innehållade orden Per Liljenberg.

1. 1. 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

3. 2. QED with external fields : vacuum effects and thermodynamics

   Författare :Per Liljenberg; Chalmers tekniska högskola; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; density; QED; vacuum magnetization; unstable vacuum; finite temperature; external field; boson stars; relativistic Bose gas;

   Sammanfattning : .... LÄS MER

4. 3. Managerial Dilemmas of a Borderland Position : Professional Standardization in the Swedish School-age Educare

   Författare :Richard Andersson; Carl-Henrik Adolfsson; Per Lindqvist; Mette Liljenberg; Linnéuniversitetet; []
   Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; educational reform; educational management; school improvement; school-age educare; sensemaking; professional standards; Pedagogics and Educational Sciences; Pedagogik och Utbildningsvetenskap;

   Sammanfattning : The overarching aim of the thesis is to explore how local school management actors, i.e. school principals and municipal management staff, interpret and enact changes in their organizations following the demands and intentions derived from the teacher certification reform in Swedish School-age Educare. LÄS MER