Difference between revisions of "Probability Seminar"

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__NOTOC__
 
__NOTOC__
  
= Spring 2019 =
+
= Spring 2020 =
  
<b>Thursdays in 901 Van Vleck Hall at 2:25 PM</b>, unless otherwise noted.  
+
<b>Thursdays in 901 Van Vleck Hall at 2:30 PM</b>, unless otherwise noted.  
<b>We  usually end for questions at 3:15 PM.</b>
+
<b>We  usually end for questions at 3:20 PM.</b>
  
 
If you would like to sign up for the email list to receive seminar announcements then please send an email to  
 
If you would like to sign up for the email list to receive seminar announcements then please send an email to  
 
[mailto:join-probsem@lists.wisc.edu join-probsem@lists.wisc.edu]
 
[mailto:join-probsem@lists.wisc.edu join-probsem@lists.wisc.edu]
  
 +
 +
== January 23, 2020, Timo Seppalainen (UW Madison) ==
 +
'''Non-existence of bi-infinite geodesics in the exponential corner growth model
 +
'''
  
 +
Whether bi-infinite geodesics exist has been a significant open problem in first- and last-passage percolation since the mid-80s.  A non-existence proof  in the case of directed planar last-passage percolation with exponential weights was posted by Basu, Hoffman and Sly in  November 2018. Their proof utilizes estimates from integrable probability.    This talk describes an independent proof completed 10 months later that relies on couplings, coarse graining, and control of geodesics through planarity and increment-stationary last-passage percolation. Joint work with Marton Balazs and Ofer Busani (Bristol).
  
== January 24, TBA ==
+
== January 30, 2020, Scott Smith (UW Madison) ==
== January 31, TBA ==
+
'''TBA'''
== February 7, TBA ==
 
== February 14, TBA ==
 
== February 21, TBA ==
 
== February 28, TBA ==
 
== March 7, TBA ==
 
== March 14, TBA ==
 
== March 21, TBA ==
 
== March 28, TBA ==
 
== April 4, TBA ==
 
== April 11, [https://sites.google.com/site/ebprocaccia/ Eviatar Proccia], [http://www.math.tamu.edu/index.html Texas A&M] ==
 
  
== April 18, TBA ==
+
== February 6, 2020, Cheuk-Yin Lee (Michigan State) ==
== April 25, TBA ==
+
'''TBA'''
== April 26, TBA ==
 
== May 2, TBA ==
 
== May 9, TBA ==
 
  
 +
== February 13, 2020, Jelena Diakonikolas (UW Madison) ==
 +
'''TBA'''
  
<!--
+
== February 20, 2020, Philip Matchett Wood (UC Berkeley) ==
==<span style="color:red"> Friday, August 10, 10am, B239 Van Vleck </span> András Mészáros, Central European University, Budapest ==
+
'''TBA'''
  
 +
== February 27, 2020, TBA ==
 +
'''TBA'''
  
Title: '''The distribution of sandpile groups of random regular graphs'''
+
== March 5, 2020, Jiaoyang Huang (IAS) ==
 +
'''TBA'''
  
Abstract:
+
== March 12, 2020, TBA ==
We study the distribution of the sandpile group of random <math>d</math>-regular graphs. For the directed model we prove that it follows the Cohen-Lenstra heuristics, that is, the probability that the <math>p</math>-Sylow subgroup of the sandpile group is a given <math>p</math>-group <math>P</math>, is proportional to <math>|\operatorname{Aut}(P)|^{-1}</math>. For finitely many primes, these events get independent in limit. Similar results hold for undirected random regular graphs, there for odd primes the limiting distributions are the ones given by Clancy, Leake and Payne.
+
'''TBA'''
  
Our results extends a recent theorem of Huang saying that the adjacency matrices of random <math>d</math>-regular directed graphs are invertible with high probability to the undirected case.
+
== March 26, 2020, Philippe Sosoe (Cornell) ==
 +
'''TBA'''
  
 +
== April 2, 2020, TBA ==
 +
'''TBA'''
 +
 +
== April 9, 2020, TBA ==
 +
'''TBA'''
 +
 +
== April 16, 2020, TBA ==
 +
'''TBA'''
 +
 +
== April 22-24, 2020, FRG Integrable Probability meeting ==
 +
 +
 +
== April 30, 2020, Will Perkins (University of Illinois at Chicago) ==
 +
'''TBA'''
  
==September 20, [http://math.columbia.edu/~hshen/ Hao Shen], [https://www.math.wisc.edu/ UW-Madison] ==
 
  
Title: '''Stochastic quantization of Yang-Mills'''
 
  
Abstract:
 
"Stochastic quantization” refers to a formulation of quantum field theory as stochastic PDEs. Interesting progress has been made these years in understanding these SPDEs, examples including Phi4 and sine-Gordon. Yang-Mills is a type of quantum field theory which has gauge symmetry, and its stochastic quantization is a Yang-Mills flow perturbed by white noise.
 
In this talk we start by an Abelian example where we take a symmetry-preserving lattice regularization and study the continuum limit. We will then discuss non-Abelian Yang-Mills theories and introduce a symmetry-breaking smooth regularization and restore the symmetry using a notion of gauge-equivariance. With these results we can construct dynamical Wilson loop and string observables. Based on [S., arXiv:1801.04596] and [Chandra,Hairer,S., work in progress].
 
  
-->
 
  
  
  
== ==
 
  
 
[[Past Seminars]]
 
[[Past Seminars]]

Latest revision as of 12:13, 17 January 2020


Spring 2020

Thursdays in 901 Van Vleck Hall at 2:30 PM, unless otherwise noted. We usually end for questions at 3:20 PM.

If you would like to sign up for the email list to receive seminar announcements then please send an email to join-probsem@lists.wisc.edu


January 23, 2020, Timo Seppalainen (UW Madison)

Non-existence of bi-infinite geodesics in the exponential corner growth model

Whether bi-infinite geodesics exist has been a significant open problem in first- and last-passage percolation since the mid-80s. A non-existence proof in the case of directed planar last-passage percolation with exponential weights was posted by Basu, Hoffman and Sly in November 2018. Their proof utilizes estimates from integrable probability. This talk describes an independent proof completed 10 months later that relies on couplings, coarse graining, and control of geodesics through planarity and increment-stationary last-passage percolation. Joint work with Marton Balazs and Ofer Busani (Bristol).

January 30, 2020, Scott Smith (UW Madison)

TBA

February 6, 2020, Cheuk-Yin Lee (Michigan State)

TBA

February 13, 2020, Jelena Diakonikolas (UW Madison)

TBA

February 20, 2020, Philip Matchett Wood (UC Berkeley)

TBA

February 27, 2020, TBA

TBA

March 5, 2020, Jiaoyang Huang (IAS)

TBA

March 12, 2020, TBA

TBA

March 26, 2020, Philippe Sosoe (Cornell)

TBA

April 2, 2020, TBA

TBA

April 9, 2020, TBA

TBA

April 16, 2020, TBA

TBA

April 22-24, 2020, FRG Integrable Probability meeting

April 30, 2020, Will Perkins (University of Illinois at Chicago)

TBA





Past Seminars