High Energy Physics

PEOPLE

High Energy Theory investigates at the most fundamental level the nature of matter and forces acting on it in the Universe. Our research addresses the following topics.

• Theoretical studies of specific observables and processes in the Standard Model (SM) and beyond the SM:
- precision tests of the SM at low and intermediate energies;
- hadronic form factors, heavy baryons, spectroscopy of scalar mesons;
- study of the hadron matter to quark-gluon plasma phase transition;
- implementation of theoretical models in event generators;
- neutrino physics.

• Nonperturbative aspects of gauge theories:
- use of causality and unitarity in phenomenological studies;
- discretization of field theories - alternatives to lattice field theories, without fermion doubling;
- use of space noncommutativity as a nonperturbative regularization scheme;
- physical processes in strong external electromagnetic fields.

• Structural aspects of classical and quantum field theories:
- gauge invariance and anomalies in the causal approach;
- nonlocal field theories in reduced dimensionality and solvable models;
- noncommutative and random tensor models in three and four dimensions;
- continuum limit of discrete theories and relevance for quantum gravity.

• Symmetries and conservations laws as basic tools in the investigation of physical systems:
- generalized symmetries on curved spaces;
- symmetry analysis of physical processes in external fields;
- singularities in general relativity and cosmological models.

• Beyond Standard Model in flat and curved space-time:
- symmetries beyond SM and their breaking (classical and quantum scale invariance, Weyl gauge symmetry, supersymmetry, supergravity etc);
- alternative theories of gravity (Weyl gravity theory, Palatini gravity, Brans-Dicke theory etc) and their predictions; models of dark matter, dark energy and inflation.

• String theory in particle physics and cosmology:
- string and F-theory model building;
- flux and orbifold compactifications, effective supergravity theories;
- moduli stabilization, supersymmetry breaking;
- nonperturbative effects, grand unification, models of inflation;
- string cosmology.

Funding Agencies: