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Currently I am a permanent/senior staff researcher (Científico Titular CSIC) at the Instituto de Fisica Teorica (IFT) in Madrid, Spain. I am mainly interested in studying modified gravity and dark energy models and confronting them with various probes including the Cosmic Microwave Background (CMB), Type Ia Supernovae (SnIa), Baryon Acoustic Oscillations (BAO) and others.

My doctorate was under the supervision of Prof. Leandros Perivolaropoulos at the University of Ioannina in Greece, from September 2004 to June 2008. After that, I worked for 3 years (2008-2011) at the Niels Bohr International Academy in Copenhagen in Denmark, where I had a prestigious grant from the Danish Research Council (FNU) and for another 3 years (2011-2014) at the Instituto de Fisica Teorica (IFT) in Madrid, Spain. Finally, I also worked (2014-2015) as senior postdoctoral researcher (Maitre-assistant) at the famous University of Geneva in Switzerland and then became a Ramon y Cajal fellow at the IFT during 2015-2021.


NEW: My awesome new paper called "A GREAT model comparison against the cosmological constant" is now on the arXiv! The abstract and the PDF version of the paper can be found here arXiv:2111.13083.

NEW: My new RSD growth-rate likelihood for Montepython, used in the paper arXiv:2006.01762, can be found in my GitHub repository RSD-growth.

NEW: The website of the Effective Fluid modifications to the CLASS code used in my papers 1811.02469 and 1904.06294 can be found here. If you use the codes, please also cite the papers!

NEW: A likelihood code for the Pantheon SnIa data used in my paper 1811.02469 can be found here. If you use the code, please also cite the paper!

TEACHING: During the spring semester of the academic year 2021/2022 I am co-teaching (with Gustavo Yepes (co-ordinator), Alexander Knebe and Santi Avila) in the Master Course: "Advanced Cosmology" at the IFT. The webpage of the class can be found here and the CMB part of the course (my part) can be found here.


I received a distinction by the Consejo Superior de Investigaciones Científicas (CSIC) for my scientific merits for the year 2015-2016 in a ceremony that took place in Madrid in Spain on June 30, 2016. Some details and a picture can be found here!

I received the Georgios Th. Foteinos award in theoretical physics and a 3000€ prize from the Academy of Athens in a ceremony that took place in Athens in Greece on December 22, 2015. The award can be seen here, while a video of the ceremony can be found here.

The American Physical Society, publisher of PRD and other journals, named me "Outstanding Referee of 2014"! Along with the award I also received a nice certificate, which can be seen here.


My educational portal has now (September 27, 2020) received ~5020 both new and returning users and around 21300 pageviews!!! Detailed stats can be found here.

Some papers related to Inflation, used in the "Cosmology" class of the IFT Master course, can be found here, while a Mathematica notebook that calculates the slow roll parameters and other quantities can be found here.

Some codes related to the CMB and the Baryon Acoustic Oscillations (BAO), used in the "Cosmology" class, can be found here.

A joint SnIa, CMB, BAO growth-rate likelihood can be found here.

For my amazing project called: "A Mathematica Interface for CosmoMC", go here.

Finally, you can have a look at my CV in PDF format.