# Seminars & Colloquia Calendar

## Shadi Tahvildar-Zadeh - Covariant Quantum Theory of Guided Fields

#### Shadi Tahvildar-Zadeh

Location: ** Hill Center room 705**

Date & time: Thursday, 13 February 2020 at 12:00PM - 1:00PM

**_________________________________________
MATHEMATICAL PHYSICS SEMINAR
RUTGERS UNIVERSITY
HILL 705
**

**__________________________________________**

**Shadi Tahvildar-Zadeh - Rutgers University** Date/Time/Location

Thursday, February 13th , 12:00pm; Hill 705

Title

"Covariant Quantum Theory of Guided Fields"

After recalling the deformation procedure that allows one to start with classical Hamilton-Jacobi theory of particle mechanics and arrive at Schroedinger's equation for the wave function that provides the quantum law of motion for those particles, I will show how one can use a similar procedure to arrive at a quantum version of the classical scalar field theory, in which the evolution of the quantized field is guided by a wave function defined on a finite-dimensional field configuration space, and that all this can be accomplished without breaking the Lorentz covariance of the theory. This is joint work with Maaneli Derakhshani and Michael Kiessling.

**THERE WILL BE A BROWN BAG LUNCH**

**Jeffry Kahn - Rutgers University**

**
** Date/Time/Location

Thursday, February 13th, 2:00pm; Hill 705

Title

"Thresholds vs. fractional expectation-thresholds"

The threshold, p_c(F), for an increasing family F contained in {0,1}^n is the (unique) p for which mu_p(F) = 1/2, where mu_p is the natural p-biased product measure on {0,1}^n. Thresholds have been central to the study of random discrete structures (e.g. random graphs and hypergraphs) since the work of Erdos and Renyi in 1960, with, in particular, estimation of thresholds for various specific properties the subject of some of the most powerful work in the area.

?

In 2006, Gil Kalai and I conjectured that a natural lower bound q(F) (the "expectation-threshold") on p_c(F) is never too far from the true value. In this talk I'll focus on a recent result proving a fractional version of this conjecture suggested about ten years ago by Michel Talagrand.?

?

This easily implies several previously difficult results and conjectures in probabilistic combinatorics, including thresholds for perfect hypergraph matchings (Johansson–Kahn–Vu) and bounded-degree spanning trees (Montgomery). We also resolve (and vastly extend) the ``axial'' version of the random multi-dimensional assignment problem, proving a 2005 conjecture of Martin, Mezard and Rivoire.?

?

Our approach builds on a recent breakthrough of Alweiss, Lovett, Wu and Zhang on the Erdos–Rado “Sunflower Conjecture.”?

?

Joint with Keith Frankston, Bhargav Narayanan and Jinyoung Park.

**____________________________________________________________________________________________________________________**

Chiara Damiolini, Ian Coley and Franco Rota -Charles Weibel Organizer's Page

Brooke Logan

Wujun Zhang Organizer's webpage

P. Gupta, X.Huang and J. Song Organizer's webpage

Swastik Kopparty, Sepehr Assadi Seminar webpage

Jeffry Kahn, Bhargav Narayanan, Jinyoung Park Organizer's webpage

Brooke Ogrodnik, Website

Robert Dougherty-Bliss and Doron Zeilberger --> homepage

Paul Feehan, Daniel Ketover, Natasa Sesum Organizer's webpage

Lev Borisov, Emanuel Diaconescu, Angela Gibney, Nicolas Tarasca, and Chris Woodward Organizer's webpage

Jason Saied Seminar webpage

Brian Pinsky, Rashmika Goswami website

Quentin Dubroff Organizer's webpage

James Holland; Organizer website

Edna Jones Organizer's webpage

Brooke Ogrodnik website

Yanyan Li, Zheng-Chao Han, Jian Song, Natasa Sesum Organizer's Webpage

Organizer: Luochen Zhao

Yanyan Li, Zheng-Chao Han, Natasa Sesum, Jian Song Organizer's Page

Lisa Carbone, Yi-Zhi Huang, James Lepowsky, Siddhartha Sahi Organizer's webpage

Simon Thomas website

Kasper Larsen, Daniel Ocone and Kim Weston Organizer's page

Joel Lebowitz, Michael Kiessling

Yanyan Li, Haim Brezis Organizer's Webpage

Stephen D. Miller, John C. Miller, Alex V. Kontorovich, Alex Walker seminar website

Stephen D. Miller

Brooke Ogrodnik, Website

Organizers: Yanyan Li, Z.C. Han, Jian Song, Natasa Sesum

Yael Davidov Seminar webpage

Kristen Hendricks, Xiaochun Rong, Hongbin Sun, Chenxi Wu Organizer's page

Fioralba Cakoni Seminar webpage

Ebru Toprak, Organizer

- Show events from all categories

## Special Note to All Travelers

Directions: map and driving directions. If you need information on public transportation, you may want to check the New Jersey Transit page.

*Unfortunately, cancellations do occur from time to time. Feel free to call our department: 848-445-6969 before embarking on your journey. Thank you.*