Dear Colleagues,

The ambition of high-energy physics is to discover the fundamental laws that govern our universe, from the infinitely small to the infinitely large. For this purpose, a continuous and sustained effort is made to develop ingenious experimental devices, both on Earth and in space. One of the most remarkable achievements is the Large Hadron Collider (LHC), a giant microscope that is 27 km long. 

On the other hand, several astrophysical and cosmological observations have improved our knowledge of the early universe and the nature of gravitational force in the strong coupling regime. 

These efforts are accompanied by significant advances in theoretical research, both in the understanding of new concepts and in the construction of new models of our universe. We invite our colleagues to contribute their papers to inform the scientific community of the advances made in this great adventure.

Prof. Dr. Ignatios Antoniadis
Dr. Karim Benakli
Guest Editors

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Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Universe is an international peer-reviewed open access monthly journal published by MDPI.

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• particle physics
• theoretical physics
• gravitation
• astroparticle physics
• cosmology
• Standard Model of fundamental interactions
• beyond the Standard Model
• gauge theories
• effective field theories
• string theory
• supersymmetry and supergravity
• dark energy
• inflation
• dark matter
• quantum gravity
• black holes