This page will be continue to be updated with relevant information about the various talks taking place at KITP, both those associated with this program as well as other ongoing programs.

All seminars at the KITP are recorded and posted, together with associated files (e.g., PowerPoint). These will be posted on the KITP website under the Talks, Wikis, & Papers link. This is done automatically by KITP for all activities, but speakers may opt out of recording or embargo the recording if they prefer.

Before you depart, PLEASE fill out an activity report and report your publications to KITP. The KITP needs feedback from the community: this not only serves help to improve and develop our services; it also provides an evaluation tool that is crucial to our continued funding.

Any manuscript for which the KITP's facilities are used, and any research which is started and/or completed at the KITP should have the following acknowledgment: This research was supported in part by the National Science Foundation under Grant No. NSF PHY11-25915. Please also list the Kavli Institute for Theoretical Physics as an institutional affiliation, if at all possible.

Go to current week.⬇

Week 1
Time
Place*
Speaker
Title
Comments, Links,...
Mon, Nov 7


All Participants
Program start


2PM
SSR
All Participants
"Get together" organizational meeting







Tue, Nov 8
10:30 AM
SSR
Cindy Regal
Entanglement and spin-motional dynamics with ground state neutral atoms in optical tweezers
The abstract can be found on the reference material page
Wed, Nov 9
2:00 PM
MSR
Lars Brink
Alfred and the Nobel Prizes
Colloquium talk
Wed, Nov 9
3:30PM
Aud
Paul S. Julienne
Long-range universality in 2- and 3-body physics (Tutorial talk)
The abstract can be found on the reference material page
Thurs, Nov 10
3:30 PM
Aud
Peter Schmelcher
Correlated Quantum Dynamics of Ultracold Few- To Many-Body Systems (Tutorial talk)
The abstract can be found on the reference material page.
Fri, Nov 11
3:30 PM
Aud
Eric Braaten
Deeply Inelastic Loss of Ultracold Atoms (Tutorial talk)
The abstract can be found on the reference material page
Fri, Nov 11
All day
KITP
All participants
Administrative holiday - no staff present


Week 2
Time
Place*
Speaker
Title
Comments, Links,...
Mon, Nov 14
2:00 PM
Aud
All participants
"Get together" organizational meeting
Note special place and time
Tue, Nov 15
10:00 AM
Aud
Jose D'Incao and Shina Tan
"Three-body collisions"
(Tag-team talk)
Note special place and time
Wed, Nov 16
10:00AM
Aud

Nitty gritty details about 3-body scattering

Wed, Nov 16
3:30 PM
Aud
Dmitry Petrov and Nikolaj Zinner
"Few-body physics in reduced dimensionality"
(Tag-team talk)

Thurs, Nov 17
10:00 AM
Aud
Xiaoling Cui and Peng Zhang
"Few-body physics with spin-orbit coupling" (Tag-team talk)
Note special place and time
Fri, Nov 18
3:30 PM
Aud
Pietro Massignan and Meera Parish
"Polarons" (Tag-team talk)
Note special place and time

Week 3
Time
Place*
Speaker
Title
Comments, Links,...
Mon, Nov 21
12:15 PM
Aud
Chris Greene
Snippets of Efimov, Rydberg, and Quantum Hall Physics
(Blackboard lunch talk)
Mon, Nov 21
2 PM
SSR
All participants
"Get together" organizational Meeting

Tues, Nov 22
10:30 AM
SSR
Alejandro Kievsky
Exploring the unitary limit using potential models: from few atoms to few nucleons

Tues, Nov 22
2:00 PM
MSR
Chris Greene
Few-body quantum Hall physics

Wed, Nov 23
10:30 AM
SSR
Peter Schmelcher/ Fabien Gatti
Open discussion: coordinates, symmetries, hamiltonians: the example of the MCTDH approach
Everyone can contribute!
Thurs, Nov 24
All day
KITP


Thanksgiving Holiday
Fri, Nov 25
All day
KITP


Thanksgiving Holiday

Week 4
Time
Place*
Speaker
Title
Comments, Links,...
Mon, Nov 28
2 PM
SSR
All participants
"Get together" organizational Meeting

Tues, Nov 29
10:30 AM
SSR
Xia-Ji Liu
Peter Drummond
Virial Expansion for a strongly correlated Fermi gas
Using projected coherent states and phase-space methods in innovative ways

Wed, Nov 30
3:30 PM
Aud
Daniel Phillips,
Emiko Hiyama
Tag-team talk.
Phillips: "Do halo nuclei exhibit few-body universality?"
Hiyama: "The universality between few-body nucleon systems and fermionic atom systems: application of Gaussian Expansion Method to the tetra-neutron system"

Thurs, Dec 1
3:30 PM
Aud
Guido Pupillo/ Gora Shlyapnikov
Tag-team talk: "Discussion on few-body liquids"

Fri, Dec 2
3:30 PM
Aud
Gerrit Gronenboom
Open discussion "Quantum chemical approach of few-body physics"


Week 5
Time
Place*
Speaker
Title
Comments, Links,...
Mon, Dec 5
2 PM
SSR
All participants
"Feedback meeting"

Tues, Dec 6
11:30 AM
SSR
Johannes Hecker Denschlag
Tracking chemical reaction paths on the quantum level
Abstract can be found here
Wed, Dec 7
3:30 PM
Aud
M. Gattobigio
A. Saenz
"Scaling and Universality in Efimovian few-body systems"
"Few body systems under confinement"

Thurs, Dec 8
All day
KITP

"Kohn science symposium"

Fri, Dec 9
3:30 PM
Aud

Open discussion:
"Various Gaussian technologies in few-body physics"

Definitions and duration:
ET: Experimental talk (45'+15' for questions); YT: Young researcher talk (25’+5’ for questions); ST: Short talk (15’)
Rydberg optical Feshbach resonances
Week 6
Time
Place*
Speaker
Title
Comments, Links,...
Mon, Dec 12
9:45 AM
MSR

Introductory Remarks

Mon, Dec 12
10 AM
MSR
Ed Narevicius
Cold Chemistry with Cold Molecules
ET: We will discuss our efforts towards reaching ultra-cold temperatures with trapped molecules where molecular beams carrying both cold molecules and atoms have been decelerated and trapped in a permanent magnetic trap. I will present our plans and prospects of further cooling via evaporation or sympathetic collisions. In the second part of my talk we will focus on cold collisions with cold molecular partners that have been magnetically merged in order to reach collisions temperatures of ~10 mK. I will show that quantum phenomena dominate collisions in this cold regime and discuss the importance of molecular degrees of freedom on cold reactions.
Mon, Dec 12
11 AM
Lobby

Coffee Break

Mon, Dec 12
11:15 AM
MSR
Shangguo Zhu
Three-body scattering hypervolume for ultracold atoms with a model twobody potential
YT: The three-boson low energy effective interaction influences the dynamic and the static properties of many bosons, including the ground state energies of dilute Bose-Einstein condensates. The three-body scattering hypervolume, which is a three-body analogue of the two-body scattering length, characterizes this effective interaction. For bosons with a soft-ball potential - the Gaussian potential, we determine the scattering hypervolume by solving the three-body Schrödinger equation numerically, and matching the solution with the asymptotic expansions for the wave function at large hyperradii.
Mon, Dec 12
11:45 AM
MSR
Shimpei Endo
Universal few-body and many-body physics in a mass-imbalanced twocomponent Fermi system
YT: For identical bosons interacting via a large s-wave scattering length, Efimov states and their
associated universal few-body bound states appear. For fermions, in particular in a mass-imbalanced two-component Fermi system with a large inter-species s-wave scattering length, even richer universal few-body and many-body states are expected to appear from the competition between a repulsion by the Pauli exclusion principle and the attraction induced by the resonant interaction. I first explain universal three-body and four-body physics in the mass-imbalanced Fermi system, and how they evolve as the mass ratio and the s-wave scattering length are varied. Then, I discuss how these few-body knowledge can be applied to quantum many-body problems of the mass-imbalanced Fermi system.
Mon, Dec 12
12:15 PM
MSR
Matt Eiles
New prospects in Rydberg molecules
YT: Recently we have explored Rydberg molecules involving more constituent particles than the original concept of a diatomic molecule of alkali atoms. Rydberg molecules can be formed from atoms with two active valence electrons as well as from a few (or many!) ground state atoms interacting with a single Rydberg atom.
Mon, Dec 12
12:45 PM


Lunch

Tues, Dec 13
9:00 AM
MSR
Simon Baier
Few-body physics with ultracold magnetic erbium
ET: Strongly magnetic atoms are an ideal system to study few- and many-body quantum phenomena
with anisotropic and long-range interactions. In this talk, we will provide an overview on the
scattering properties of a lanthanide species, namely Erbium. We will discuss the modification of the Wigner threshold law arising from the long-range character of the dipole-dipole interaction and show how dipolar scattering can be used to drive identical fermions to the quantum degenerate regime [1,2]. Moreover, we will present the peculiar dense spectrum of Feshbach resonances in Erbium and Dysprosium [3], discuss the origin of the effect, and present a detailed measurement of the s-wave scattering length by the use of a three-dimensional optical lattice. Our precise knowledge on the scattering length recently enabled us to study in detail the dipolar interaction in the work frame of the extended Bose-Hubbard model [4], as well as the formation of a macro-droplet of erbium atoms [5].
References:
[1] K. Aikawa, A. Frisch, M. Mark, S. Baier, R. Grimm, and F. Ferlaino, PRL 112, 010404 (2014)
[2] K. Aikawa, A. Frisch, M. Mark, S. Baier, R. Grimm, J.L. Bohn, D.S. Jin, G.M. Bruun, and F. Ferlaino, PRL 113, 263201 (2014)
[3] T. Maier, H. Kadau, M. Schmitt, M. Wenzel, I. Ferrier-Barbut, T. Pfau, A. Frisch, S. Baier, K. Aikawa, L. Chomaz, M. J. Mark, F. Ferlaino, C. Makrides, E. Tiesinga, A. Petrov, S. Kotochigova, PRX 5, 041029 (2015)
[4] S. Baier, M. J. Mark, D. Petter, K. Aikawa, L. Chomaz, Z. Cai, M. Baranov, P. Zoller, F. Ferlaino,
Science 352, 201 (2016)
[5] L. Chomaz, S. Baier, D. Petter, M. J. Mark, F. Wächtler, L. Santos, F. Ferlaino, PRX 6, 041039 (2016).
Tues, Dec 13
10:00 AM
Lobby

Coffee Break

Tues, Dec 13
10:15 AM
MSR
Rosario Gonzalez-Ferez
Rydberg optical Feshbach resonances
ST
Tues, Dec 13
10:30 AM
MSR
Krzysztof Jachymski
Rydberg polaritons as a new platform for few-body physics
ST
Tues, Dec 13
10:45 AM
MSR
Rudro Rana Biswas
Quantum Hall states at points of singular curvature
ST
Tues, Dec 13
11:00 AM
MSR
All
Discussion

Tues, Dec 13
12:00 PM


Lunch

Tues, Dec 13
2:00 PM
MSR
Daniel Phillips
Beyond universality? p-wave interactions in halo nuclei
ST
Tues, Dec 13
2:15 PM
MSR
Joseph Carlson
Transitions from few to many-body quantum systems' in cold atoms and nuclear physics
ST
Tues, Dec 13
2:30 PM
MSR
Lucas Platter
Universality beyond the zero-range limit
ST
Tues, Dec 13
2:45 PM
MSR
All
Discussion

Tues, Dec 13
3:30 PM
Lobby

Cookies, and more discussion

Wed, Dec 14
9:00 AM
MSR
Jonathan Simon
Building Quantum Materials from Light
ET: I will discuss ongoing work in my group to develop strongly interacting photons as a platform for exploring few- to many- body physics. We have recently demonstrated that non-planar optical resonators may be employed to investigate quantum Hall physics in curved space, and I will discuss our progress towards the strongly-correlated regime via photon-photon interactions mediated by Rydberg excitations, as well as response to curvature as a measure of quantized transport coefficients. I will also describe the development of Chern-insulating microwave circuits compatible with transmon-mediated interactions. A looming challenge is the population of topological groundstates in synthetic systems. To this end, I will conclude with a description of our plans for both particle-by-particle construction- and dissipative stabilization- of Laughlin states.
Wed, Dec 14
10:00 AM
Lobby

Coffee

Wed, Dec 14
10:15 AM
MSR
Svetlana Kotochigova
Three-body interactions with magnetic lanthanides
ST
Wed, Dec 14
10:30 AM
MSR
Robert Moszynski
Asymptotic physics and ultracold chemistry with diatomic strontium
molecules
ST
Wed, Dec 14
10:45 AM
MSR
Michal Tomza
Controlled non-universality of ultracold isotope-exchange reactions
ST
Wed, Dec 14
11:00 AM
MSR
All
Discussion

Wed, Dec 14
12:00 PM
Goleta Beach
All
BBQ Lunch

Thurs, Dec 15
9:00 AM
MSR
Jan Arlt
Few-Body physics with ultracold K and Rb: Efimov physics and the Bose polaron
ET: Ultracold atomic mixtures offer a multitude of opportunities for addressing few-body physics. In recent experiments we have investigated mixtures of K and Rb as well as spin mixtures of K. These mixtures are produced by exploiting a total of three Feshbach resonances for simultaneous tuning of the 39K intraspecies and the 39K-87Rb interspecies scattering lengths [1]. Our investigation of Efimov physics was triggered by an unexpected non-universal behavior of E_mov resonances across isotope combinations in K+Rb . I will present our measurements of the scattering length dependent threebody recombination coefficient in heteronuclear mixtures of 39K-87Rb and 41K-87Rb, which do not show any signatures of Efimov resonances [2]. In more recent experiments we have therefore investigated homonuclear Efimov resonances in 39K with the aim of observing multiple Efimov resonances on adjacent Feshbach resonances. This has led to the observation of an unexpected temperature dependence of the Efimov resonance strength, which remains to be understood. I will present and discuss recent experimental data.
In the second part of the talk I will discuss the use of two spin components of 39K to investigate the Bose polaron [3]. Radio frequency spectroscopy between the two components shows the existence of a well-defined quasiparticle state for an impurity interacting with the BEC and allows for a measurement of its energy for attractive and repulsive interactions. Our results show that the spectral response consists of a well-defined quasiparticle peak at weak coupling which is strongly broadened for increasing interaction strengths. This opens up intriguing prospects for studying mobile impurities in a bosonic environment, as well as strongly interacting Bose systems in genera
Thurs, Dec 15
10:00 AM
Lobby

Coffee

Thurs, Dec 15
10:15 AM
MSR
Yvan Castin
The fourth virial coefficient of the unitary Fermi gas
ST
Thurs, Dec 15
10:30 AM
MSR
Servaas Kokkelmans
Description of finite range effects in three-body physics with an offthe-energy-shell T-matrix
ST
Thurs, Dec 15
10:45 AM
MSR
Xia-Ji Liu
Strongly interacting Fermi gas in the quasirepulsive regime
ST
Thurs, Dec 15
11:00 AM
MSR
All
Discussion

Thurs, Dec 15
12:00 PM
Lobby

Lunch

Thurs, Dec 15
2:00 PM
MSR
Nirav Mehta
Formulating the few-body problem for nonreactive molecules in deep
optical lattices
ST
Thurs, Dec 15
2:15 PM
MSR
Chris Ticknor
Towards inclusion of excited vibrational states in ultracold moleculemolecule quantum scattering calculations
ST
Thurs, Dec 15
2:30 PM
MSR
Olivier Dulieu
Long-range interactions in few-body systems: a perspective from
interacting cold molecules
ST
Thurs, Dec 15
2:45 PM
MSR
All
Discussion

Thurs, Dec 15
3:30 PM
Lobby
All
Cookies and more discussion

Fri, Dec 16
9:00 AM
MSR
Gora Shlyapnikov
“p”-wave superfluids in free space and in a lattice
ST
Fri, Dec 16
9:15 AM
MSR
Eite Tiesinga
Quench physics with few-body atomic systems in optical lattice
ST
Fri, Dec 16
9:30 AM
MSR
Dmitry Petrov
Five-body Efimov effect and universal pentamer in fermionic mixtures
ST
Fri, Dec 16
9:45 AM
MSR
All
Discussion

Fri, Dec 16
10:45 AM
MSR
All
Conclusion/Prospects


*Aud=Auditorium, SSR=Small Seminar Room, MSR=Main Seminar Room FR=Founders' Room
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