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Twistors in relativistic field theories
Nárožný, Jiří ; Scholtz, Martin (advisor) ; Souček, Vladimír (referee)
In this thesis, we are concerning about the Twistor theory, field originally motivated purely physically, although these days fully developed into the many fields of mathem- atics and physics. With its complexion Twistor theory influences algebraic geometry, Clifford analysis as well as the String theory or Theory of quantum gravity. In the thesis we describe the origin of twistors projective or not. Mathematical background to the twistor theory is covered in the first chapter, where we study Clifford algebras and their representations. In the first part of the second chapter we are describing non-projective twistors as representation elements of certain Spin-group, and we find the connection with the standard definition of non-projective twistors as a kernel of the twistor operator. In the last part of the second chapter, we create a space of pro- jective twistors and show its certain properties, especially its correspondence with the complexified compactified Minkowski spacetime.
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Differential geometry and dynamics
Nárožný, Jiří ; Krýsl, Svatopluk (advisor) ; Scholtz, Martin (referee)
The aim of this thesis is to show some mathematical concepts and methods of differential geometry and Lie groups. Subsequently, we try to use this tools in physics. Selection of these two mathematical topics is not random, because these topics are close related essentials of theoretical physics. The thesis is split into two chapters. Each chapter fulfils one of this aim. In the first chapter we introduce the notion of group, which is further enriched with other notions, like group action or group product. This detailed and smooth process leads us to introduction of homogeneous space which is one of the most important notion of Klein geometry. The end of this chapter is devoted to brief introduction to this attitude to geometry. The second chapter consists formulation of physical tasks in the language of differential geometry and afterwards its solution. As the final topic in this thesis we introduce Jacobi connection, as more natural option of connection which is implemented to physical system. Powered by TCPDF (www.tcpdf.org)
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