Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 5 of 5 for “"Higher Derivative Terms"”.
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Higher Derivative Corrections to the Low-Energy E ective Action of Type IIA/B String Theory and M-theory
… is the low-energy eective action of M-theory. Higher order corrections to the low-energy eective actions of these supergravity theories contain perturbative and non-perturbative eects<br/>of the corresponding string theories and, as such, understanding the structure of the higher order terms …
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Gravitational Effective Field Theories and Black Hole Mechanics
… where the Lagrangian is treated as a series of higher derivative terms scaling with some UV parameter beyond which we have "integrated out" the unknown physics. This thesis is concerned with studying two issues in gravitational EFTs. First, we would like these theories to be mathematically …
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Higher Derivative Gravitational Systems and Ghost Fields
… results by re-interpreting the meaning of higher derivative terms in perturbation expansions.</p>
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On Vacuum Structures and Quantum Corrections in String Theory
… Initially, we investigate the structure of higher derivative terms involving the 3-form G3 in the α′ and string-loop expansion of the ten-dimensional Type IIB effective action. Subsequently, we ex- plore α′ corrections in F-theory compactifications to four dimensions in Ch. 6. Here, we focus …
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The origin of inflation.
… in this thesis. We study inflation driven by higher de1ivative quantum effects and show how theories of initial conditions may provide observational discriminants between different inflationary scenarios. First we consider scalar field inflation and develop the techniques to calculate …