Dark energy through derivatives of matter fields

 

Shahab Shahidi

School of Physics, Damghan University

 

Abstract: In this talk, I will try to explore the possibility of extracting dark energy effects from derivatives of the baryonic matter Lagrangian. I will give some motivations about the idea and then build a gravitational theory containing these derivatives. I will then investigate the background and also first order cosmological perturbations of the theory. I will find the best fit values for the model parameter using observations on the Hubble parameter and also f\sigma_8 data. We will see that the cosmological observations could be satisfied in this model, but we should care more about the accelerating phase of the universe. At last, I will give some comments about the problems and also possible solutions.

 

یکشنبه 20 مهر 1399، ساعت  15:00

Sunday 11 October 2020 – 15:00 Tehran Time

اتاق سمینار مجازی –Virtual Seminar Room

https://vc.sharif.edu/ch/cosmology

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