Chalkboard with research

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.

 Current Publications


Paper Title

Author

Reference

Remarks on the Novikov-Shifman-Vainshtein-Zakahrov ß functions in two-dimensional N=(0,2) supersymmetric models

J. Chen, M. Shifman Phys.Rev. D99 (2019) no.6, 065007

Strange hadrocharmonium

M.B. Voloshin Phys.Lett. B798 (2019) 135022

Radiative production of nonthermal dark matter

K. Kaneta, Y. Mambrini, K.A. Olive Phys.Rev. D99 (2019) no.6, 063508

Hillclimbing inflation in metric and Palatini formulations

R. Jinno, K. Kaneta, K. Oda, S.C. Park Phys.Lett. B791 (2019) 396-402

Global Analysis of Dark Matter Simplified Models with Leptophobic Spin-One Mediators using MasterCode

E. Bagnaschi et al. Eur.Phys.J. C79 (2019) no. 11, 895

Radiative and pionic transitions Zc(4020)0→X(3872)γ and Zc(4020)±→X(3872)π±

M.B. Voloshin Phys.Rev. D99 (2019) no.5, 054028

Teaching Physics at School and Colleges

M. Shifman The Physics Educator, Vol. 01, No. 01, 1950003 (2019)

A Minimal SU(5) SuperGUT in Pure Gravity Mediation

J. Evans, N. Nagata, K.A. Olive Eur.Phys.J. C79 (2019) no.6, 490

Worldsheets in Holography: Computing Corrections to the Veneziano Amplitude

E. Ireson Mod.Phys.Lett. A34 (2019) no.14, 1930002

Hidden-charm pentaquark formation in antiproton-deuterium collisions

M.B. Voloshin Phys.Rev. D99 (2019) no.9, 093003

Unified No-Scale Model of Modulus Fixing, Inflation, Supersymmetry Breaking, and Dark Energy

J. Ellis, D. Nanopoulos, K.A. Olive, S. Verner Phys.Rev. D100 (2019) 025009

Composite Non-Abelian Strings with Grassmannian Models on the World Sheet

E. Ireson, M. Shifman, A. Yung Phys.Rev.Research. 1 (2019) 023002

Quantizing a solitonic string

M. Shifman, A. Yung JHEP 1912 (2019) 050

Limits on R-parity Violation in High Scale Supersymmetry

E. Dudas, T. Gherghetta, K. Kaneta, Y. Mambrini, K.A. Olive Phys.Rev. D100 (2019) no.3, 035004

From Gauged Linear Sigma Models to Geometric Representation of WCP(N,Ñ) in 2D

C-H. Sheu, M. Shifman  

Deciphering the XYZ States

M.B. Voloshin Conference: C19-05-06

Unified No-Scale Attractors

J. Ellis, D. Nanopoulos, K.A. Olive, S. Verner JCAP 1909 (2019) no.09, 040

Cosmology with a Master Coupling in Flipped SU(5) × U(1): The λ6 Universe

J. Ellis, M. Garcia, N. Nagata, D. Nanopoulos, K.A. Olive Phys.Lett. B797 (2019) 134864

Some decay properties of hidden-charm pentaquarks as baryon-meson molecules

M.B. Voloshin Phys.Rev. D100 (2019) no. 3 034020

From Minkowski to de Sitter in Multifield No-Scale Models

J. Ellis, B. Nagaraj, D. Nanopoulos, K.A. Olive, S. Verner JHEP 1910 (2019) 161

The Hubbard model on a triangular lattice -- pseudogap due to spin-density-wave fluctuations

M. Ye, A. Chubukov Phys. Rev. B 100, 035135 (2019)

Implicit renormalization approach to the problem of Cooper instability

A. Chubukov, N. Prokof'ev, B. Svistunov Phys. Rev. B 100, 064513 (2019)

Dynamic properties of superconductors: Anderson-Bogoliubov mode and Berry phase in BCS and BEC regimes

D. Mozyrsky, A. Chubukov Phys. Rev. B 99, 174510 (2019)

Phonon mediated superconductivity in low carrier-density systems

M. Gastiasoro, A. Chubukov, R. Fernandes Phys. Rev. B 99, 094524 (2019)

Quantum criticality of granular SYK matter

A. Altland, D. Bagrets, A. Kamenev Phys. Rev. Lett. 123, 106601 (2019)

Finite Size Scaling at the Topological Transition: Bilinear-Biquadratic Spin-1 Chain

Y. Wang, A. Kamenev  

Giant violation of Wiedemann-Franz law in doping layers of modern AlGaAs heterostructures

M. Sammon, M. Banerjee, B. Shklovskii  

Attraction of indirect excitons in van der Waals heterostructures with three semiconducting layers

M. Sammon, B. Shklovskii Phys. Rev. B 99, 165403 (2019)

Constraining ν-Process Production of Fluorine through Cosmic Ray Nucleosynthesis

K.A. Olive, E. Vangioni Mon.Not.Roy.Astron.Soc. 490 (2019) no.3, 4307-4316

Evaluating the Price of Tiny Kinetic Mixing

T. Gherghetta, J. Kersten, K.A. Olive, M. Pospelov Phys.Rev. D100 (2019) no.9, 095001

Superstring-Inspired Particle Cosmology: Inflation, Neutrino Masses, Leptogenesis, Dark Matter, & the SUSY Scale

J. Ellis, M. Garcia, N. Nagata, D. Nanopoulos, K.A. Olive  

Big-Bang Nucleosynthesis After Planck

B. Fields, K.A. Olive, T.-H. Yeh, C. Young  

Inflation and Leptogenesis in High-Scale Supersymmetry

K. Kaneta, Y. Mambrini, K.A. Olive Phys.Rev. D101 (2020) no.1, 015002

Update on Splitting of Lifetimes of c and b Hyperons within the Heavy Quark Expansion and Decays ΞQ→ΛQπ

M.B. Voloshin Phys.Rev. D100 (2019) no.11, 114030

Supersymmetric Proton Decay Revisited

J. Ellis, J. Evans, N. Nagata, K.A. Olive, L. Velasco-Sevilla  

Musings on the Current Status of HEP

M. Shifman  

The Interplay Between Superconductivity and Non-Fermi Liquid at a Quantum-Critical Point in a Metal

A. Chubukov, A. Abanov, Y. Wang, Y.-M. Wu  

Hidden and Mirage Collective Mode in Two Dimensional Fermi Liquids

A. Klein, D. Maslov, A. Chubukov  

Nematic Superconductivity in Twisted Bilayer Graphene

D. Chichinadze, L. Classen, A. Chubukov  
Kohn-Luttinger Correction to Tc in a Phonon Superconductor D. Phan, A. Chubukov  
Raman Response in the Nematic Phase of FeSe M. Udina, M. Grilli, L. Benfatto, A. Chubukov  
Orbital Transutation and the Electronic Spectrum of FeSe in the Nematic Phase M. Christensen, R. Fernandes, A. Chubukov  
Collective Modes Near a Pomeranchuk Instability A. Klein, D. Maslov, L. Pitaevskii, A. Chubukov Phys. Rev. Research 1, 033134 (2019)
SYK non Fermi Liquid Correclations in Nanoscopic Quantum Transport A. Altland, D. Bagrets, A. Kamenev Phys. Rev. Lett. 123, 226801 (2019)
Emptiness Formation Probability in 1D Bose Liquids H.-C. Yeh, A. Kamenev  
Helical Spin Liquid in a Triangular XXZ Magnet from Chern-Simons Theory T. Sedrakyan, R. Moessner, A. Kamenev  
Resistivity Anisotropy of Quantum Hall Stripe Phases M. Sammon et al. Phys. Rev. B 100, 241303 (2019)
Anderson Transition in Three-Dimensional Systems with non-Hermitian Disorder Y. Huang, B. Shklovskii