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Condensed Matter Seminars This Term
Condensed Matter
Thursday, August 22, 2019
2:30 PM
Physics Building, Room 204
Note special time.

Paul Fendley
[Host: Israel Klich]
Oxford University
"TBA"

ABSTRACT:


Condensed Matter
Thursday, November 14, 2019
3:30 PM
Physics Building, Room 313
Note special room.

Leonid Petrov
[Host: Marija Vucelja]
UVa, Department of Mathematics
"Mapping TASEP back in time"

ABSTRACT:
We obtain a new relation between the distributions μ_t at different times t ≥ 0 of the continuoustime TASEP (Totally Asymmetric Simple Exclusion Process) started from the step initial configuration. Namely, we present a continuoustime Markov process with local interactions and particledependent rates which maps the TASEP distributions μ_t backwards in time. Under the backwards process, particles jump to the left, and the dynamics can be viewed as a ver sion of the discretespace Hammersley process. Combined with the forward TASEP evolution, this leads to a stationary Markov dynamics preserving μ_t which in turn brings new identities for expectations with respect to μ_t. Based on a joint work with Axel Saenz.


Condensed Matter
Thursday, December 5, 2019
11:00 AM
Physics Building, Room 313
Note special time.
Note special room.

Professor Yi Li
[Host: Dima Pesin]
Johns Hopkins University
"Monopole Superconductivity and DensityWave Order in Weyl Semimetals"

ABSTRACT:
Although the existence of magnetic monopoles is admitted by the fundamental laws, the real monopoles in nature remain elusive. Nevertheless, variations of monopoles appear in realistic condensed matter systems, from quantum Hall effects to topological superconductivity, which spur a race to discover new exotic topological phases of matter. In this talk, we will present a dramatic effect arising from topological Fermi surfaces  a novel topological class of superconductivity and densitywave orders: When the ordered pairs acquire nontrivial twoparticle Berry phases, their pairing phases cannot be globally welldefined in the momentum space. Therefore, the conventional description of superconducting pairing symmetries in terms of spherical harmonics (e.g. s, p, dwaves) ceases to apply. Instead, they are characterized by topologically protected nodal gap functions represented by monopole harmonic functions. This socalled “monopole harmonic order” is expected to be realized and detected in Weyl semimetal materials.




To add a speaker, send an email to gc6u@Virginia.EDU Include the seminar type (e.g. Condensed Matter Seminars), date, name of the speaker, title of talk, and an abstract (if available). [Please send a copy of the email to physspeakers@Virginia.EDU.]
