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Current Group Members

Umesh Kumar

Umesh Kumar

I am a physics graduate student at the University of Tennessee, Knoxville, where I am currently working with Dr. Steve Johnston. I am interested in studying strongly correlated electrons using numerical techniques. Currently, I am working on models to study correlated systems probed by core-level spectroscopies like x-ray absorption and resonant inelastic x-ray scattering using exact diagonalization and other small cluster techniques.
Shaozhi Li

Shaozhi Li

I am a Ph.D. student at the University of Tennessee, Knoxville. I am currently using determinant quantum Monte Carlo to study electron-phonon interactions in correlated systems. I am also interested in non-linear and anharmonic effects in electron-phonon coupled systems.

Ken Nakatsukasa

I am a Ph.D. student at the University of Tennessee, Knoxville. My research interests are in studying the physics of superconductivity, mainly in the high-Tc cuprates but also in some Iron-based superconductors. In particular, I’m currently analyzing various spectroscopic probes such as ARPES, optical conductivity, and STM/STS (i.e. quasiparticle interference) to study bosonic excitations such as phonons and spin fluctuations to see how they are possibly involved in pairing in these materials.
Phil Dee

Phil Dee

I am a physics Ph.D. student at the University of Tennessee, Knoxville. My current research interests aim to investigate the problem of dilute superconductors like Nb-doped SrTiO3. I use determinant quantum Monte Carlo and Eliashberg theory for the single-band Holstein model and other electron-phonon coupled systems to study the competition between superconducting and charge-density wave phases. My additional interests relate to the application of machine learning to many-body algorithms and the development new field theoretic approaches in condensed matter.

Former Members

Dr. Yan Wang

Dr. Yan Wang

Member from Sept. 2015 to Aug. 2017. Current position: Post-doctoral researcher at the Université de Sherbrooke (Québec, Canada).

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