Search for dissertations about: "QFT"

Showing result 1 - 5 of 8 swedish dissertations containing the word QFT.

  1. 1. An optimization approach to the design of robust controllers : applied to a tokamak control problem

    Author : Carl-Magnus Fransson; Chalmers University of Technology; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; SQP; PID control; mu-analysis; robustness; tokamak; QFT; onconvex global optimization; plasma; H infin-control; performance;

    Abstract : .... READ MORE

  2. 2. Optimization Methods for Robust Control with Application to Resistive Wall Modes in Tokamaks

    Author : Carl-Magnus Fransson; Chalmers University of Technology; []
    Keywords : H?; fusion; QFT; performance; tokamak; optimization; robustness; structured singular value; control; plasma; resistive wall modes; LMI; PID control;

    Abstract : In many research areas physical systems are described by mathematical models. We focus here on systems that are regulated by a controller, typically realized by software, whose design involves certain parameters. READ MORE

  3. 3. Model Reduction for Control of Stirred Tank Reactor Processes

    Author : Veronica Olesen; Chalmers University of Technology; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; QFT; CSTR; sensitivity functions; Model simplification; closed loop;

    Abstract : Models of chemical processes have a tendency of being far too complex for controller design. In many cases these models are also too complex for simulation together with other sub-systems, due to long simulation times and numerical problems. READ MORE

  4. 4. Aspects of QFT with boundaries and D-branes

    Author : Maxim Zabzine; Constantin Bachas; Stockholms universitet; []
    Keywords : NATURAL SCIENCES; NATURVETENSKAP; Theoretical Physics; teoretisk fysik;

    Abstract : Modern string theory is a rich framework which goes beyond standard quantum field theory. There is a belief that at low energies string theory reduces to the Standard Model and Einstein's gravity. In the last years we have learned that there exist different descriptions of the same physics, containing both strings and other extended objects. READ MORE

  5. 5. Quenched coupling and thermal behavior in the O(N) vector model

    Author : Julius Engelsöy; Stockholms universitet; []
    Keywords : NATURAL SCIENCES; NATURVETENSKAP; NATURVETENSKAP; NATURAL SCIENCES; Theoretical Physics; teoretisk fysik;

    Abstract : Thermalization is an elusive phenomenon in quantum mechanics. Since according to the AdS/CFT correspondence, a thermal state in the boundary CFT is dual to a black hole in the bulk spacetime, thermalization in the CFT is dual to black hole formation in AdS. READ MORE