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T1  - Higgs inflation and higher-order gravity in Palatini formulation 
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UR  - URN:NBN:fi:hulib-202005292527; http://hdl.handle.net/10138/315503 
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A1  - Annala, Jaakko 
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PB  - Helsingin yliopisto 
Y1  - 2020 
LA  - eng 
AB  - We study how higher-order gravity affects Higgs inflation in the Palatini formulation. We first review the metric and Palatini formulations in comparative manner and discuss their differences. Next cosmic inflation driven by a scalar field and inflationary observables are discussed. After this we review the Higgs inflation and compute the inflationary observables both in the metric and Palatini formulations. We then consider adding higher-order terms of the curvature to the action. We derive the equation... 
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KW  - cosmology; inflation; Higgs; modifications of gravity; Palatini formulation; none; Alkeishiukkasfysiikka ja kosmologia; Particle Physics and Cosmology; Elementarpartikelfysik och kosmologi; Alkeishiukkasfysiikan ja astrofysikaalisten tieteiden maisteriohjelma; Master's Programme in Particle physics and Astrophysical Sciences; Magisterprogrammet i elementarpartikelfysik och astrofysikaliska vetenskaper 
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