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Title: On aspects of infinite derivatives field theories & infinite derivative gravity
Author: Teimouri, Ilia
ISNI:       0000 0004 6498 7086
Awarding Body: Lancaster University
Current Institution: Lancaster University
Date of Award: 2018
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In this thesis some essential aspects of an infinite derivative theory of gravity are studied. Namely, we considered the Hamiltonian formalism, where the true physical degrees of freedom for infinite derivative scalar models and infinite derivative gravity are obtained. Furthermore, the Gibbons-Hawking-York boundary term for the infinite derivative theory of gravity was obtained. Finally, we considered the thermodynamical aspects of the infinite derivative theory of gravity over different backgrounds. Throughout the thesis, our methodology is applied to other modified theories of gravity as a check and validation. Infinite derivative theory of gravity is a modification to the general theory of relativity. Such modification maintains the massless gravi- ton as the only true physical degree of freedom and avoids ghosts. Moreover, this class of modified gravity can address classical singularities.
Supervisor: Gratus, Jonathan Sponsor: Not available
Qualification Name: Thesis (Ph.D.) Qualification Level: Doctoral