Sökning: "analytic theory"

Visar resultat 1 - 5 av 169 avhandlingar innehållade orden analytic theory.

  1. 1. Vacua in String Theory : de Sitter Space and Stability in Flux Compactifications

    Författare :Sergio C. Vargas; Ulf Danielsson; Alessandro Tomasiello; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; String theory; Cosmology; Flux Compactifications; Landscape; Swampland;

    Sammanfattning : Our understanding of cosmology has evolved radically in the last decades. Current models demand the presence of dark energy in our universe and the most favored candidate behind this component is a small positive cosmological constant that characterizes a de Sitter (dS) spacetime. LÄS MER

  3. 2. Linear response theory : from black hole thermalization to Weyl semimetals

    Författare :Jorge Laraña Aragón; Bo Sundborg; Edwin Langman; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Theoretical Physics; teoretisk fysik;

    Sammanfattning : Linear response theory is an incredibly powerful calculation tool. We apply this framework in quantum field theory to a variety of models originated from distinct areas in theoretical physics and for different reasons. LÄS MER

  4. 3. On some topics in operator theory : An unfinished story about mathematical control

    Författare :Eskil Rydhe; Harmonic Analysis and Applications; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Carleson embeddings; complex analysis; control theory; functional models; Hankel operators; harmonic analysis; operator theory; Triebel–Lizorkin spaces; vector-valued analytic functions;

    Sammanfattning : This thesis considers differentiation of non-negative, fractional order, composed with Hardy spacetypeHankel operators. H2-boundedness is characterized in terms of a reproducing kernel thesis. LÄS MER

  5. 4. A convex optimization approach to complexity constrained analytic interpolation with applications to ARMA estimation and robust control

    Författare :Anders Blomqvist; Anders Lindquist; Giorgio Picci; KTH; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Mathematical optimization; systems theory; analytic interpolation; moment matching; Nevanlinna-Pick interpolation; spectral estimation; convex optimization; Optimeringslära; systemteori; Optimization; systems theory; Optimeringslära; systemteori;

    Sammanfattning : Analytical interpolation theory has several applications in systems and control. In particular, solutions of low degree, or more generally of low complexity, are of special interest since they allow for synthesis of simpler systems. LÄS MER

  7. 5. Situational sources of rule-breaking acts : an analytic criminology approach

    Författare :Alberto P. Chrysoulakis; Marie Torstensson Levander; Anna-Karin Ivert; Alfonso Serrano Maíllo; Malmö universitet; []
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; adolescents; collective efficacy; crime propensity; delinquency; mechanisms; morality; peers; rule-breaking; self-control; situational action theory; time-use; unstructured socialising; Kriminologi; Criminology;

    Sammanfattning : Criminology has long been divided by mainly focusing on people’s propensities to commit crimes, on the one hand, and environmental characteristics conducive to crime, on the other. Such a division must be bridged to advance knowledge about why some people, but not others, commit rule-breaking acts in some environments but not in others. LÄS MER