Events

Tue, January 16 2:00pm
JILA X317
JILA Public Seminar
Observing Power-Law Dynamics of Position-Velocity Correlation in Anomalous Diffusion

Gadi Afek,
Weizmann Institute

Abstract/Details

In this talk I will present a measurement of the phase-space density distribution (PSDD) of ultracold 87Rb atoms performing 1D anomalous diffusion. The PSDD is imaged using a direct tomographic method based on Raman velocity selection. It reveals that the position-velocity correlation function Cxv(t) builds up on a timescale related to the initial conditions of the ensemble and then decays asymptotically as a power-law. We show that the decay follows a simple scaling theory involving the power-law asymptotic dynamics of position and velocity. The generality of this scaling theory is confirmed using Monte Carlo simulations of two distinct models of anomalous diffusion.  G. Afek, J. Coslovsky, A. Courvoisier, O. Livneh, and N. Davidson, Observing Power-Law Dynamics of Position-Velocity Correlation in Anomalous Diffusion, Phys. Rev. Lett. 119, 060602 (2017)  
Wed, January 17 4:00pm
Duane Physics Room G1B20
Physics Department Colloquium
TBA

Daniel Fisher,
Stanford University

Abstract/Details

TBA
Thu, January 18 12:00pm
Duane Physics Room D142
Condensed Matter Seminar
TBA

Daniel Fisher,
Stanford University

Abstract/Details

TBA
Mon, January 22 4:00pm
JILA Auditorium
Astrophysical & Planetary Sciences Seminar
TBA

Sarah Ballard,
Massachusetts Institute of Technology

Abstract/Details

TBA
Wed, January 24 4:00pm
Duane Physics Room G1B20
Physics Department Colloquium
TBA

Eric Hudson,
UCLA

Abstract/Details

TBA
Thu, January 25 12:00pm
Duane Physics Room D142
Condensed Matter Seminar
TBA

Dan Shahar,
Weizmann Institute

Abstract/Details

TBA
Thu, January 25 3:30pm
JILA h-bar
JILA Fun Day
JILA Hat Day

JILA Reception

Abstract/Details

Wear your favorite or most interesting hat! Join us for a group picture and snacks. Pehaps you'll win a prize for your awesome hat!
Sat, January 27 9:30am
Duane Physics Room G1B30
CU Wizards Program
Speed!

Eric Cornell,
JILA, University of Colorado
Sat, January 27 2:00pm
Duane Physics Room G1B30
Saturday Physics Series
Windows and Climate Change

Ivan Smalyukh,
JILA

Abstract/Details

Heating, ventilation, and air conditioning of buildings account for about 15% of the global energy consumption, but about 20% of this building-related energy is lost because of inefficient windows. Greenhouse emissions associated with producing and using this energy contribute substantially to climate change. Is there a solution to this challenging problem? Starting from the physical principles associated with energy loss through windows, I will describe our development of visibly transparent, infrared-reflecting, thermally super-insulating materials that may replace or retrofit the inefficient windowpanes of residential and commercial buildings. Using many demonstrations, I will discuss how this technology has much in common with liquid crystal displays and how production of such unusual transparent aerogel materials is aided by bacteria to make them affordable.
Mon, January 29 4:00pm
JILA Auditorium
Astrophysical & Planetary Sciences Seminar
TBA

Wen-fai Fong,
University of Arizona
Tue, January 30 4:00pm
Duane Physics Room G1B30
Nuclear/Particle Physics Seminar
Unlocking neutrino mysteries with the NOvA experiment

Christopher Blackhouse,
CalTech

Abstract/Details

The 2015 Nobel Prize in Physics was awarded for the discovery of the phenomenon of neutrino oscillations, which implies that neutrinos are not massless as we had previously believed. This raises a wealth of new and intriguing questions. What is the ordering of the neutrino mass states? Might they violate matter/antimatter symmetry? What structure, if any, does the neutrino mixing matrix have? The NOvA experiment directly addresses these questions by measuring changes undergone by a powerful neutrino beam over an 810 km baseline, from its source at Fermilab, Illinois to a huge 14 kton detector in Ash River, Minnesota. I will give a brief overview of neutrino oscillations, then present our latest results, their implications, and prospects for the future.
Wed, January 31 8:00am
Reception Lobby
JILA Fun Day
National Popcorn Day

Abstract/Details

Free Popcorn
Wed, January 31 4:00pm
Duane Physics Room G1B20
Physics Department Colloquium
TBA

Jonathan Lunine,
Cornell University

Abstract/Details

TBA
Fri, February 02 10:30am
Duane Physics Room G126
CTQM Seminar
CTQM Seminar

Joel Moore,
UC Berkeley

Abstract/Details

TBA
Wed, February 07 4:00pm
Duane Physics Room G1B20
Physics Department Colloquium
Dirac, Jordan, and von Neumann: Hilbert space and transformation theory

Michel Janssen,
University of Minnesota

Abstract/Details

In early 1927, Paul Dirac and Pascual Jordan, independently of one another, published their versions of a general formalism tying the various forms of the new quantum theory together and giving the theory's statistical interpretation in full generality. This formalism has come to be known as the Dirac-Jordan (statistical) transformation theory. A few months later, in response to these publications by Dirac and Jordan, John von Neumann published his Hilbert space formalism for quantum mechanics. The relation between the two formalisms can be captured in terms of a metaphor of arches and scaffolds that I have argued fits a number of instances of theory change in physics. What is unclear in this case is whether the story is best told with Hilbert space playing the role of the arch built on transformation theory as a scaffold to be dismantled once the arch could support itself, or with transformation theory playing the role of the arch and Hilbert space providing the scaffold built to prevent the arch from collapsing under the weight of its serious mathematical deficiencies. Either way, a narrative for this episode in the history of quantum mechanics based on the arches-and-scaffolds metaphor illustrates the promise of borrowing ideas from the approach to evolutionary biology known as evodevo for reconstructing genealogies of theories rather than species.
Tue, February 13 3:30pm
JILA 10th Floor
JILA Fun Day
Decadant Desserts

Abstract/Details

Bring your most decadant dessert to share with your fellow JILAns! Dessert judging will take place at 3:30pm with awesome prizes to follow!
Wed, February 14 3:30pm
JSCBB Butcher Auditorium
Biochemistry Seminar
TBA

Howard Chang

Abstract/Details

TBA
Wed, February 21 4:00pm
Duane Physics Room G1B20
Physics Department Colloquium
TBA

Jonas Zmuidzinas,
California Institute of Technology

Abstract/Details

TBA
Sat, February 24 9:30am
Cristol Chemistry Room 140
CU Wizards Program
The Chemistry of Cooking!

David Nesbitt,
JILA, University of Colorado
Tue, February 27 8:00am
JILA Reception lobby
JILA Fun Day
National Polar Bear Day

Abstract/Details

Wear any polar bear related apparel and receive an "icy" treat from Reception!
Wed, February 28 3:30pm
JSCBB Butcher Auditorium
Biochemistry Seminar
TBA

Mark Lemmon

Abstract/Details

TBA
Wed, February 28 4:00pm
Duane Physics Room G1B20
Physics Department Colloquium
Command of Swimming Bacteria by Liquid Crystals

Oleg Lavrentovich,
Kent State University

Abstract/Details

Self-propelled bacteria are marvels of nature. If we can control their dynamics, we could use it to power microsystems of the future. Unfortunately, bacteria swim mostly randomly in isotropic liquids such as water. It is difficult to control their dynamics by factors other than transient gradients of nutrients; visual, acoustic and tactile communication channels that humans use to control large animals are not effective. To establish communication, we replace water with a water-based lyotropic liquid crystal, which couples propulsion of bacteria to the orientational order of the medium. The long-range orientational order of the liquid crystal can be designed as uniform or be pre-patterned into various structures by a plasmonic photoalignment technique [1]. The preimposed patterns of liquid crystal orientation allow one to gain a significant control over the dynamics of bacteria, namely, their trajectories, polarity of swimming, spatial variation of concentration [2], and run-and-tumble behavior [3]. Topological defects of integer strength serve either as attractors or repellents of bacteria, while defect pairs and patterns with broken left-right symmetry pump the bacterial flows along a preselected polar axis. The study of bacteria-liquid crystal system might result in approaches to harness the energy of collective motion for micro-robotic, biomechanical, and sensing devices, as well as micro-mixing and transport of micro-cargo. The work is supported by NSF grants DMR-1507637 and DMS-1729509.
Mon, March 05 4:00pm
JILA Auditorium
Astrophysical & Planetary Sciences Seminar
TBA

Nate Kaib,
University of Oklahoma
Wed, March 07 4:00pm
Duane Physics Room G1B20
Physics Department Colloquium
TBA

Sae Woo Nam,
NIST

Abstract/Details

TBA
Mon, March 12 4:00pm
JILA Auditorium
Astrophysical & Planetary Sciences Seminar
TBA

Nate Kaib,
University of Oklahoma

Abstract/Details

TBA
Wed, March 14 3:15pm
JILA h-bar
JILA Fun Day
Pi Day

Abstract/Details

Pie for Pi Day!
Wed, March 14 3:30pm
JSCBB Butcher Auditorium
Biochemistry Seminar
TBA

Ian Wilson

Abstract/Details

TBA
Sat, March 17 9:30am
Duane Physics Room G1B30
CU Wizards Program
Much Ado About Absolute Zero!

Paul Beale,
University of Colorado
Mon, March 19 4:00pm
JILA Auditorium
Astrophysical & Planetary Sciences Seminar
TBA

John Wisniewski,
University of Oklahoma

Abstract/Details

TBA
Mon, March 19 4:00pm
JILA Auditorium
Astrophysical & Planetary Sciences Seminar
TBA

John Wisniewski,
University of Oklahoma
Wed, March 21 3:30pm
JSCBB Butcher Auditorium
Biochemistry Seminar
TBA

Craig Pikaard

Abstract/Details

TBA
Wed, March 21 4:00pm
Duane Physics Room G1B20
Physics Department Colloquium
TBA

John Miao,
UCLA

Abstract/Details

TBA
Fri, March 23 3:30pm
JILA h-bar
JILA Fun Day
National Chip and Dip day

Abstract/Details

Reception will supply chips and dip. No double dipping!
Mon, April 02 4:00pm
JILA Auditorium
Astrophysical & Planetary Sciences Seminar
APS Department Colloquium

Mon, April 02 4:00pm
JILA Auditorium
Astrophysical & Planetary Sciences Seminar
TBA

Shelley Wright,
University of California, San Diego
Wed, April 04 3:30pm
JSCBB Butcher Auditorium
Biochemistry Seminar
TBA

Chuan He

Abstract/Details

TBA
Wed, April 04 4:00pm
Duane Physics Room G1B20
Physics Department Colloquium
TBA

Carlton Caves,
University of New Mexico

Abstract/Details

TBA
Mon, April 09 4:00pm
JILA Auditorium
Astrophysical & Planetary Sciences Seminar
TBA

Shelley Wright,
UC San Diego

Abstract/Details

TBA
Wed, April 11 3:30pm
JSCBB Butcher Auditorium
Biochemistry Seminar
TBA

David Livingston

Abstract/Details

TBA
Wed, April 11 4:00pm
Duane Physics Room G1B20
Physics Department Colloquium
TBA

Alain Aspect,
Institut d’Optique Graduate School, Palaiseau

Abstract/Details

TBA
Mon, April 16 8:00am
TBD
JILA Fun Day
Stress Awareness Day

Abstract/Details

Destress with your fellow JILAns through various activities.
Mon, April 16 4:00pm
JILA Auditorium
Astrophysical & Planetary Sciences Seminar
TBA

Quinn Konopacky,
University of California, San Diego
Wed, April 18 3:30pm
JSCBB Butcher Auditorium
Biochemistry Seminar
TBA

Jeff Settleman

Abstract/Details

TBA
Wed, April 18 4:00pm
Duane Physics Room G1B20
Physics Department Colloquium
TBA

Jun Ye,
JILA, CU Boulder

Abstract/Details

TBA
Mon, April 23 4:00pm
JILA Auditorium
Astrophysical & Planetary Sciences Seminar
TBA

Daryl Haggard,
McGill University

Abstract/Details

TBA
Mon, April 23 4:00pm
JILA Auditorium
Astrophysical & Planetary Sciences Seminar
TBA

Daryl Haggard,
McGill University
Thu, April 26 3:30pm
JILA h-bar
JILA Fun Day
National Pretzel Day

Abstract/Details

Pretzel trivia with prizes and pretzels!
Thu, April 26 4:00pm
Duane Physics Room G1B20
Physics Department Colloquium
TBA

Dan Goldman,
Georgia Tech

Abstract/Details

TBA
Sat, April 28 9:30am
Cristol Chemistry Room 140
CU Wizards Program
Sink or Swim!

Mathias Weber,
JILA, University of Colorado
Mon, April 30 4:00pm
JILA Auditorium
Astrophysical & Planetary Sciences Seminar
TBA

Rebekah Dawson,
Penn State
Wed, May 02 4:00pm
Duane Physics Room G1B20
Physics Department Colloquium
TBA

Colin Broholm,
Johns Hopkins University

Abstract/Details

TBA
Sat, May 12 9:30am
Duane Physics Room G1B30
CU Wizards Program
Power, Grace, Wisdom, and Wonder: The Physics of The Game of Thrones!

Rebecca Thompson,
University of Colorado
Sat, June 16 9:30am
CU Planetarium
CU Wizards Program
Blackholes!

Andrew Hamilton,
JILA, University of Colorado

No front page content has been created yet.