Research in Theoretical Particle Physics

Theoretical Particle Physics is traditionally one of the main research field in SISSA. Its aim is to study and develop theories and models devoted to the understanding and unification of the four fundamental interactions in Nature. Within this broad reasearch field, the group has traditionally been focused on phenomenological as well as on more formal aspects. Below, you can find a more detailed description of those research topics which are presently pursued.

Phenomenology of fundamental interactions
In spite of its impressive success, the Standard Model of particle physics is believed to be the low energy manifestation of a more fundamental theory. A wide spectrum of experiments - the Large Hadron Collider (LHC), together with neutrino, flavour and astroparticle experiments - is entering the unexplored territory lying beyond the electroweak scale, with the potential to lead to important breakthroughs in our understanding of fundamental physics.
The Theoretical Particle Physics group is focusing its present research on different aspects of particle physics phenomenology. Primarily on:

  • Physics beyond the Standard Model: A. Romanino, M. Serone, M. Fabbrichesi, Warning: mysql_result(): Unable to jump to row 0 on MySQL result index 24 in /srv/www-tpp/www/header.inc.php on line 219 Warning: mysql_result(): Unable to jump to row 0 on MySQL result index 24 in /srv/www-tpp/www/header.inc.php on line 227 S. Spinner, Warning: mysql_result(): Unable to jump to row 0 on MySQL result index 25 in /srv/www-tpp/www/header.inc.php on line 219 Warning: mysql_result(): Unable to jump to row 0 on MySQL result index 25 in /srv/www-tpp/www/header.inc.php on line 227 M. Spinrath, M. Pinamonti, W. Huang, A. Urbano
  • Neutrino physics: S. Petcov, A. Romanino, Warning: mysql_result(): Unable to jump to row 0 on MySQL result index 31 in /srv/www-tpp/www/header.inc.php on line 219 Warning: mysql_result(): Unable to jump to row 0 on MySQL result index 31 in /srv/www-tpp/www/header.inc.php on line 227 M. Spinrath, W. Huang, J. Lopez Pavon
  • Grand Unification and Flavour Physics: S. Bertolini, A. Romanino, Warning: mysql_result(): Unable to jump to row 0 on MySQL result index 36 in /srv/www-tpp/www/header.inc.php on line 219 Warning: mysql_result(): Unable to jump to row 0 on MySQL result index 36 in /srv/www-tpp/www/header.inc.php on line 227 M. Spinrath
  • Astroparticle Physics: A. De Simone, P. Ullio


Theory of fundamental interactions
The present experiments in high energy physics and in cosmology urge physicists to think at the same time in terms of infinitely large (evolution of the universe) and infinitely small (the world of elementary particles). This in turn calls for a theory able to describe all fundamental interactions in a unified way. One of the best candidate for such a role at present is superstring theory, an area our group has always been very active on. There exist also other approaches towards the quantization of gravity. A possibility, which is also been pursued by members of our group, is based on the idea that gravity could actually be described by a quantum field theory, if a nonperturbative form of renormalizability is realized.
The Theoretical Particle Physics group has always been, and still is, very active in these research fields. Recent focus is put, primarily, on the following topics: