All future
Wednesday, November 25th 2009
There will be no seminar this week.
No colloquium this week. Thanksgiving.
Thursday, November 26th 2009
There will be seminar this week.
There will be no seminar this week.
There will be seminar this week.
Friday, November 27th 2009
There will be no colloquium this week.
There will be no seminar this week.
Wednesday, December 2nd 2009
Speaker: To be announced
Refreshments served in Room 216 Physics after colloquium
Thursday, December 3rd 2009
Speaker: Pete Mendygral and Evan Skillman
Speaker: Alexei Bazavov, University of Arizona
Subject: Recent results on QCD thermodynamics on the lattice
Speaker: Mun Chan, University of Minnesota
Subject: Electrical detection of a hyperfine-induced spin-dependent Hall effect in ferromagnet-semiconductor heterostructures
Friday, December 4th 2009
Speaker: Cynthia Cattell
Subject: Particle acceleration and energy transfer in space plasmas
mainly for new graduate students
I will give a brief introduction to the field of space plasma physics and its relationship to plasma physics and astrophysics. I will describe some interesting new results from the Minnesota group on relativistic electron acceleration, structure of shock waves, reconnection and energy transport via Alfven waves. I will briefly review current and upcoming projects that can involve graduate students.
Speaker: Dr. Judith Cohen, Caltech
Subject: Going, Going, Gone - The Formation of the Galactic Halo
A lot of new evidence has emerged in the past few years that provides clues to the formation of the Galactic halo. The Λ
CDM model, so succesful in the cosmological context,
failed spectacularly when initially applied to this problem, but recent work has largely resolved these discrepancies. I will discuss the newly emerging view of the relationship between the
dwarf spheroidal satellites of the Milky Way, the Galactic globular cluster system, and the stellar halo of our galaxy.
Monday, December 7th 2009
Speaker: Alexander Turbiner, National University of Mexico, Mexico City
Subject: A new family of planar solvable and integrable Schroedinger equations
It is shown that the Smorodinsky-Winternitz potential, BC_2 rational model, 3-body Calogero model, Wolves potential are all the members of a continuous family of planar solvable and integrable Schroedinger equations marked by some continuous parameter. Their spectra is always linear in quantum numbers. Hidden algebra of the family for integer values of the parameter is uncovered. It is non-semi-simple Lie algebra gl(2)x R^{k+1} realized as vector fields on line bundles over k-Hirzebruch surface. Obtained potential admits quasi-exactly solvable (QES) generalization with the same hidden algebra gl(2) x R^{k+1}. The question about super-integrability of the QES potential remain open yet.
Classical-mechanical analogue of the family is presented. It has a property of integrability while the solvability is replaced by a feature that all finite trajectories are closed.
Wednesday, December 9th 2009
Speaker: To be announced
Refreshments served in Room 216 Physics after colloquium
Thursday, December 10th 2009
Speaker: Andrea Mehner and Yong Qian
Speaker: Matteo Palassini, University of Barcelona
Subject: Thermodynamics of the electron glass and the Coulomb gap
Friday, December 11th 2009
Speaker: Shaul Hanany
Subject: Reaching to the Big Bang
mainly for new graduate students
I will describe experiments that attempt to understand the physics of the big bang. The experiments are balloon borne and are designed to observe the polarization of the cosmic microwave background radiation. By employing thousands of detectors that collect data over two weeks of balloon flight over Antarctica we hope to clarify physical processes that occurred as early as 10e-35 seconds after the big bang.
Speaker: Dr. Farhad Zadeh, Northwestern U
Subject: The Massive Black Hole at the Center of the Galaxy
There has recently been a dramatic increase in our understanding of the supermassive black hole at the dynamical center of our galaxy, first identified as the nonthermal radio source Sgr A. Stellar orbit measurements have shown a mass of four million solar mass coincident with Sgr A and a luminosity which is several orders of magnitude lower than the Eddington luminosity. To study the underluminous nature of Sgr A, we have been monitoring the variability of the emission from Sgr A by making simultaneous multi-wavelength observations. I will present highlights of these measurements which are providing us with insights on the nature of the flow very near the event horizon as well as the emission mechanism in different wavelength bands. Time permitting, I will also discuss the origin of one or two discs of massive stars found within 0.5 pc of Sgr A as well signatures of young massive star formation in the molecular ring orbiting Sgr A.
Speaker: David Queller, Department of Ecology and Evolutionary Biology, Rice University
Subject: What Is an Organism?
Refreshments served in Room 216 Physics at 3:15 p.m.
Cosponsored by the Minnesota Center for Philosophy of Science and the Conceptual Foundations of Evolutionary Biology Interdisciplinary Graduate Group.
The organism is the fundamental unit of life and yet there is surprisingly little debate, and even less agreement, about what it is. Following on the realization that new levels of organisms have evolved from groups of lower-level organisms, we propose a social definition. An organism is a biological entity that has very high cooperation among its parts, and very little conflict, and is thus the locus of adaptation. We explore the implications of this view for what we consider to be organisms, and argue its advantages relative to earlier views.
Thursday, December 17th 2009
Speaker: Finals Week - No High Energy Seminar this Week
Thursday, December 24th 2009
Speaker: No Speaker Today
Subject: Holiday, University Closed
Thursday, December 31st 2009
Speaker: No Speaker Today
Subject: Holiday, University Closed
Thursday, January 7th 2010
Thursday, January 14th 2010
Thursday, January 21st 2010
Friday, January 22nd 2010
Speaker: Martin Greven
Subject: Neutron and x-ray scattering of strongly correlated electron systems.
mainly for new graduate students
Wednesday, January 27th 2010
Speaker: Maxim Pospelov, Perimeter Institute for Theoretical Physics
Subject: To be announced.
Refreshments served in Room 216 Physics after colloquium
Thursday, January 28th 2010
Friday, January 29th 2010
Speaker: Oriol Valls
Subject: Condensed matter theory
mainly for new graduate students
Wednesday, February 3rd 2010
Speaker: Nemanja Kaloper
Subject: (Particle and Cosmology Theory)
Refreshments served in Room 216 Physics after colloquium
Thursday, February 4th 2010
Thursday, February 11th 2010
Thursday, February 18th 2010
Wednesday, February 24th 2010
Speaker: Ray Orbach, Department of Energy
Subject: To be announced.
Refreshments served in Room 216 Physics after colloquium
Thursday, February 25th 2010
Wednesday, March 3rd 2010
Speaker: Haiyan Gao (Duke University)
Subject: Neutron Electric Dipole Moment
Refreshments served in Room 216 Physics after colloquium
Wednesday, March 10th 2010
Speaker: To be announced.
Refreshments served in Room 216 Physics after colloquium
Thursday, March 11th 2010
Wednesday, March 17th 2010
No colloquium Spring Break/March Meeting
Thursday, March 18th 2010
Speaker: Spring Break - No Seminar this Week
Wednesday, March 24th 2010
Speaker: Mitchell Luskin, University of Minnesota
Subject: Applied mathematics
Refreshments served in Room 216 Physics after colloquium
Thursday, March 25th 2010
Wednesday, March 31st 2010
Speaker: Vladimir Savinov, University of Pittsburgh
Subject: Probing the Nature of Neutrinos and Other Fun Stuff with ATLAS at the LHC.
Refreshments served in Room 216 Physics after colloquium
Processes with high transverse momentum leptons and jets
are predicted by many Beyond the Standard Model (BSM)
scenarios including leptoquarks, Left-Right Symmetry and
various models of Grand Unification. Such theoretical models
extend the application of Quantum Field Theory to energies far
above the Electroweak Symmetry Breaking (EWSB) energy scale
and seek to provide a more elegant description of the fundamental
forces. I will present preliminary results of studies performed with the ATLAS detector at the LHC, where we attempt to address questions about the origin of masses and the nature of the known neutrinos, the origin of CP violation and its role in baryogenesis, the origin of flavor and other fundamental questions beyond EWSB.
Wednesday, April 7th 2010
Speaker: Dam Thanh Son
Subject: (Nuclear & Particle Theory)
Refreshments served in Room 216 Physics after colloquium
Wednesday, April 14th 2010
Speaker: Albert Libchaber, The Rockefeller University
Subject: biological physics
Refreshments served in Room 216 Physics after colloquium
Thursday, April 15th 2010
Wednesday, April 21st 2010
Speaker: Chandra Varma, UC Riverside
Subject: High temperature superconductivity theory; Honorary degree
Refreshments served in Room 216 Physics after colloquium
Thursday, April 22nd 2010
Wednesday, April 28th 2010
Speaker: Francis Everett, Stanford University
Subject: Gravity Probe B
Refreshments served in Room 216 Physics after colloquium
Thursday, April 29th 2010
Wednesday, May 5th 2010
Speaker: Leo Kadanoff, James Franck Institute, University of Chicago
Subject: To be announced.
Refreshments served in Room 216 Physics after colloquium