Chalkboard with research


In addition to supporting the faculty, postdoctoral researchers, and graduate students involved in this research at the Institute, FTPI also hosts short-term and long-term visitors and organizes workshops on topics of acute interest in the major areas of study.

High Energy Theory & Particle Astrophysics

The High Energy Theory Group focuses on understand the fundamental forces of nature and cosmology. The unification of the electromagnetic and weak nuclear force is well understood and is continually being tested experimentally. Among the objectives of the group in Minnesota is to push our understanding beyond the Standard Model of electroweak interactions. The strong nuclear force is inherently more complicated and understand the nature of strongly interacting systems  is another major objective of the group.

Particle Astrophysics and Cosmology is another aspect of High Energy theory as the Universe provides a laboratory for studying particle interactions at energies much higher than can be achieved experimentally. Topics which are actively pursued include, inflation, the baryon asymmetry, dark matter, nucleosynthesis and large scale structure.

Condensed Matter Theory

As condensed matter theorists, one of our main goals is to understand how the microscopic behavior of a very large number of atoms or molecules is related to the macroscopic properties of solids and liquids. While this certainly applies to objects common in our daily lives, such as kitchen salt or water, we are also interested in quantum versions of solids, liquids, and gases. For example, the properties of many metals are well described in terms of a gas of nearly independent electrons, whereas in other systems the electron-electron interaction is so significant that they behave as strongly correlated quantum liquids.

At first sight, the problem may seem deceivingly straightforward, after all, the ions and electrons forming the atoms only talk to each other via the good old electrostatic repulsion. However, it turns out that the quantum-mechanical collective behavior of condensed matter systems is often very different than just the simple sum of its constituents. This phenomenon, called emergence, is behind many unique and fascinating properties, among which superconductivity is perhaps the best known.

Condensed matter theory is a very broad area, that ranges from concrete applications to more abstract models. At the University of Minnesota, we have a vibrant condensed matter theory group working on a diverse set of topics, such as quantum materials, superconductivity, liquid crystals, quantum magnets, topological quantum matter, disordered systems, and non-equilibrium physics. We also enjoy frequent collaborations with the condensed matter experimental group, creating an engaging atmosphere to perform research in this field.

Selected Publications




Higgsino Dark Matter in Pure Gravity Mediated Supersymmetry

J. L. Evans, K. A.Olive

Phys. Rev. D 106 (2022)

Standard Model Prediction for Paramagnetic Electric Dipole Moments

Y. Ema, T. Gao, M. Pospelov

Phys. Rev. Lett. 129 (2022)

Gravitational Portals with Non-Mimimal Couplings

S. Clery, Y. Mambrini, K. A. Olive, A. Shkerin, S. Verner

Phys. Rev. D 105 (2022)

Enhanced EDMs from Small Instantons

R. S. Bedi, T. Gherghetta, M. Pospelov

Phys. Rev. D 106 (2022)

Improved indirect limits on charm and bottom quark EDMs

Y. Ema, T. Gao, M. Pospelov

JHEP 07 (2022)

Probing Physics Beyond the Standard Model: Limits from BBN and the CMB Independently and Combined

T.-H. Yeh, J. Shelton, K. A. Olive, B. D. Fields

JCAP 10 (2022)

Reevaluation of heavy-fermion-induced electron EDM at three loops

Y. Ema, T. Gao, M. Pospelov

Phys. Lett. B (2022)

Post-Inflationary Dark Matter Bremsstrahlung

Y. Mambrini, K. A. Olive, and J. Zheng

JCAP 10 (2022)

Accelerating Earth-bound dark matter D. McKeen, M. Moore, D. Morrissey, M. Pospelov, H. Ramani Phys. Rev. D 106 (2022)
Scattering mechanisms in state-of-the-art GaAs/AlGaAs quantum wells Y. Huang, B. I. Shklovskii, M. A. Zudov Phys. Rev. Materials 6 (2022)
Plasmons in semiconductor and topological insulator wires with large dielectric constant Y. Huang, C.-H. Sheu, B. I. Shklovskii Low Temp. Phys. 48 (2022)
Conductivity of two-dimensional small gap semiconductors and topological insulators in strong Coulomb disorder Y. Huang, B. Skinner, B. I. Shklovskii J. Exp. Theor. Phys. 135 (2022)
Disordered Graphene Ribbons as Topological Multicritical Systems S. Kasturirangan, A. Kamenev, F. J. Burnell Phys. Rev. B 106 (2022)
Two parameter scaling in the crossover from symmetry class BDI to AI S. Kasturirangan, A. Kamenev, F. J. Burnell Phys. Rev. B 105 (2022)
Superconductivity out of a non-Fermi liquid: Free energy analysis S.-S. Zhang, Y.-M. Wu, A. Abanov, A. V. Chubukov Phys. Rev. B 106 (2022)
Twists and turns of superconductivity from a repulsive dynamical interaction D. Pimenov and A. V. Chubukov Annals of Physics (2022)
Cascade of transitions in twisted and non-twisted graphene layers within the van Hove scenario D. V. Chichinadze, L. Classen, Y. Wang, A. V. Chubukov npj Quantum Mater. 7 (2022)
Odd-frequency pairing and time-reversal symmetry breaking for repulsive interactions D. Pimenov and A. V. Chubukov Phys. Rev. B 106 (2022)
Odd frequency pairing in a quantum critical metal Y.-M. Wu, S.-S. Zhang, A. Abanov, A. V. Chubukov Phys. Rev. B 106 (2022)