## Condensed Matter Events

#### Fall 2023

##### Optical and Electronic Properties of Two-Dimensional Materials

Speaker: Vasili Perebeinos (University at Buffalo)Host: I. Borzenets

Atomically thin two-dimensional materials are direct bandgap semiconductors with a rich interplay of the valley and spin degrees of freedom, which offer the potential for electronics and optoelectronics. A strong Coulomb interaction leads to tightly bound electron-hole pairs or excitons and two-electron one-hole quasiparticles or trions. We solve the two-particle [...]##### Toward high-order non-abelions: formation of helical states in the fractional quantum Hall regime

Speaker: Leonid Rokhinson (Purdue University)Host: I. Borzenets

Quantum statistics, spin and symmetry of the wavefunction are central to the quantum mechanical understanding of the world. Up to now all known particles exhibit Abelian statistics, where exchange of two particles amounts to a multiplication by a phase factor. Emergence of non-Abelian excitations in specially designed low dimensional systems [...]##### Spectral gaps from stars and lines

Speaker: Nick Hunter-Jones (UT Austin)Host: Joaquin Rodriguez Nieva

Computing the spectral gap of a local Hamiltonian is a notoriously hard problem, but if the Hamiltonian is frustration-free, the problem becomes far more tractable. We’ll write down some general criteria for lower-bounding the spectral gap of frustration-free Hamiltonians. We’ll then discuss some applications, including relating the gap of a [...]##### Unconventional Magnetism in Spintronics: the emergence of Altermagnetism and its consequences

Speaker: Jairo Sinova (Johannes Gutenberg University Mainz, Germany and TAMU )Host: Ar. Abanov

The discovery of d-wave magnetic order in momentum space has motivated a closer look at the symmetry classification of collinear magnetic systems. This has emerged as the third basic collinear magnetic ordered phase of altermagnetism, which goes beyond ferromagnets and antiferromagnets. Altermagnets exhibit an unconventional spin-polarized d/g/i-wave band structure in [...]##### Tutorial series, talk 1

Speaker: Shenglong Xu (TAMU)Host: Shenglong Xu

This tutorial series navigates from fundamental to advanced concepts in the interdisciplinary research area bridging quantum many-body physics and quantum information science, targeting interested graduate students and postdocs, though faculty members are also welcome. We will first discuss basic terminology and tools in the field, such as quantum circuits, entanglement, [...]##### Tutorial series, talk 2

Speaker: Joaquin Rodriguez Nieva (TAMU)Host: Joaquin Rodriguez Nieva

This tutorial series navigates from fundamental to advanced concepts in the interdisciplinary research area bridging quantum many-body physics and quantum information science, targeting interested graduate students and postdocs, though faculty members are also welcome. We will first discuss basic terminology and tools in the field, such as quantum circuits, entanglement, [...]#### Spring 2024 & Beyond

##### TBA

Speaker: Matteo Ippoliti (University of Texas at Austin)Host: Joaquin Rodriguez Nieva