April 21-April 27, 2002 THE BOSTON AREA PHYSICS CALENDAR The Boston Area Physics Calendar is published weekly during the academic year by the Department of Physics at Northeastern University. You may send your announcement by e-mail (bapc@neu.edu) or FAX (617-373-2943). We cannot accept announcements by telephone. Entries should reach us no later than 11:00 a.m. the Monday of the week proceeding the week of the event. ENTRIES RECEIVED AFTER THE DEADLINE WILL NOT BE PUBLISHED. Monday, April 22, 2002 Monday, April 22, 2002, 4:15 p.m. Massachusetts Institute of Technology Nuclear and Particle Physics Colloquium Kolker Room, 26-414 "Flavor Delicacies (A Tour Through the Mysteries Of Matter)" Matthias Neubert Cornell University Monday, April 22, 2002, 4:30 p.m. Brown University Physics Colloquium Barus and Holley 168 "Tunable Tunneling in Spin Solids, Liquids and Glasses" Professor Thomas Rosenbaum Physics Department University of Chicago *Refreshments served at 4:00 p.m.* Monday, April 22, 2002, 4:30 p.m. Harvard University Department of Physics Colloquium Jefferson 250 "Splitting the Electron" Leon Balents University of California, Santa Barbara *Tea will be served in Jefferson 450 at 4:00 pm* Monday, April 22, 2002, 2:00PM Massachusetts Institute of Technology Particle Theory Seminar Center for Theoretical Physics Building 6, Third floor seminar room ``Diluting cosmological constant" Georgi Dvali New York University Refreshments will be served. Tuesday, April 23, 2002 Tuesday, April 23, 2002, 2:00 p.m. Massachusetts Institute of Technology Nuclear Theory Seminar Center for Theoretical Physics Building 6, Third floor seminar room ``Proposal for the numerical solution of planar QCD" Rajamani Narayanan American Physical Society *Refreshments will be served* Tuesday April 23, 2002, 2:00 p.m. Massachusetts Institute of Technology Joint Harvard-MIT Center for Ultracold Atoms MIT Building 26, Room 214 "Ultracold dipolar gases" Tilman Pfau University of Stuttgart, Germany See also http://cua.mit.edu/ *Tea and cookies served at 1:40 p.m.* *Note Unusual Time* Tuesday, April 23, 2002, 2:30 p.m. Tufts University Tufts/CfA/MIT Cosmology Seminar Robinson Hall, Room 250 "Interacting quantum fields violate all energy conditions" Ken Olum Tufts University *Refreshments will be served at 2:00 p.m. in Knipp Library, Room 251* Tuesday, April 23, 2002, 3:30 p.m. Boston University Metcalf Science Center, (590 Commonwealth Ave.), Room 107 Physics Department Colloquium Dean S. Edmonds Lecture "Emergent Quantum Certainty" Prof. Robert Laughlin Stanford University *Refreshments will be served at 3:15 p.m.* *Please call (353-2600) one day in advance for parking* Tuesday, April 23, 2002, 4:00 p.m. Northeastern University CIRCS Seminar Dana Research Center, Room 114 "From crumpling to cell growth" Dr. A. Boudaoud Ecole Normal Superiour Paris, France *Refreshments will be served at 3:45 p.m.* Tuesday, April 23, 2002, 4:00 p.m. Brandeis University Martin Weiner Lecture Series, Physics Colloquium Physics Building, Abelson 131 "The Physics of Wireless Communication in a Disordered World: Replicas and Diffusions for Fun and Profit" Prof. Steven H. Simon Lucent Technologies *Refreshments in Room 333 at 3:30 p.m.* Tuesday, April 23, 2002, 4:00 p.m. Massachusetts Institute of Technology MIT Astrophysics Colloquium Marlar Lounge, Room 37-252 MIT Center For Space Research 70 Vassar St., Cambridge "TBA" Dr. Tom Murphy University of Michigan *Refreshments will be served at 3:45 p.m.* Tuesday, April 23, 2002, 4:30 p.m. BU-Harvard-MIT Mathematical Physics Seminar Boston University Physics Research Building 3 Cummington Street, Room 593 "Belinskii-Khalatnikov-Lifshitz Dynamics and Hyperbolic Kac Moody Algebras" Hermann Nicolai Albert Einstein Institut Max-Planck Institut fuer Gravitationsphysik, Golm Germany *Free parking is available at the garage at 595 Commonwealth Avenue, but requires an e-mail request to dmcote@bu.edu at least 4 hours in advance, stating your full name in the "Subject" field. Tell the parking attendant that you have come for the Mathematical Physics Seminar* Wednesday, April 24, 2002 Wednesday, April 24, 2002, 12:00 noon Tufts University Robinson Hall, Room 250 "Measurement of the Casimir Force Between Parallel Metallic Surfaces" R. Onofrio University of Padova Wednesday, April 24, 2002, 12 noon Brandeis University Condensed Matter Seminar Physics Building, Room 333 "Harris criterion and correlated quantum percolation" Dr. Nancy Sandler Brandeis University Wednesday, April 24, 2002, 4:30 p.m. Boston University Joint Theory Seminar Physics Research Building, Room 593 3 Cummington St. "Quantum Phase Transitions and the Breakdown of Classical General Relativity" Professor Bob Laughlin Stanford University *Refreshments at 4 p.m.* *Call 617 353 2600 for parking, at least 24 hours in advance* Wednesday, April 24, 2002 2:00PM Massachusetts Institute of Technology String Seminar Center for Theoretical Physics Building 6, third floor seminar room ``Mirror Symmetry, Superpotentials and Large N Dualities" Mina Aganagic Harvard University Thursday, April 25, 2002 Thursday, April 25, 2002, 4:00 p.m. Brown University Condensed Matter Seminar Barus and Holley 190, "TBA" Dr. Nancy Sandler Brandeis University Thursday, April 25th, 1:00 p.m. Harvard University Materials Science Seminar Gordon McKay Lab 402, The Turnbull Room "Reactive Multilayer Foils: Science and Applications" Timothy P. Weihs Johns Hopkins University Thursday, April 25, 2002, 4:15 p.m. Massachusetts Institute of Technology Department of Physics Colloquium Room 10-250 "Origin of Astrophysical Jets" R. V. E. Lovelace Cornell University Wednesday, April 25, 2002, 4:30 p.m. Boston University Joint Theory Seminar Physics Research Building, Room 593 3 Cummington St. Professor Bob Laughlin Stanford University "Quantum Phase Transitions and the Breakdown of Classical General Relativity" *Refreshments at 4 p.m.* *Call 617 353 2600 for parking, at least 24 hours in advance* April 25, 2002 Harvard University Jefferson 256 4:00 PM Dr. Adam Kaminski University of Illinois at Chicago Argonne National Laboratory "Electronic interactions in high temperature superconductors revealed by ARPES" Abstract: Angle Resolved PhotoEmission Spectroscopy is a powerful probe of electronic structure and interactions. Recent advances in electron optics have made this technique even more valuable as a tool to explore the excitations in novel materials like the high temperature superconductors. It is now well established that these materials cannot be understood within the framework of conventional solid state models and new concepts have to be introduced in order to describe their properties. After a general introduction I will discuss the results of our recent ARPES studies that provide new insights to better understand these phenomena. In particular, by studying the issue of coherence of electronic states as a function of the carrier concentration and temperature, we have identified a new cross-over line in the phase diagram separating the region where these materials display strange metallic behavior from one where they resemble a conventional metal. By using circularly polarized photons, ARPES becomes a phase sensitive probe of electronic wave functions. We have used this technique to probe the properties of the mysterious pseudogap region of the phase diagram and have found evidence indicating time reversal symmetry breaking. April 25, 2002 Condensed Matter Theory Seminar Harvard University Physics Department Claudio Chamon Boston University "Heterogeneous aging in quantum and classical short-range spin glasses". Lyman 424 12:00 noon Thursday, April 25, 2002, 8:00 p.m. Harvard University David M. Lee Historical Lecture in Physics Science Center, 1 Oxford St., Hall A (Simulcast in Hall E) "The Birth and Early Decades of Solid State Physics Remembered" Walter Kohn University of California, Santa Barbara Reception after the lecture in front of Collection of Historical & Scientific Instruments Museum Science Center Basement Thursday, April 25, 2002, 4:15 p.m. Harvard University Duality Seminar Jefferson 453 "Gauged Maximal (N=16) Supergravities in Three Dimensions" Hermann Nicolai AEI Golm Refreshments will be offered in the High Energy Theory coffee area, 4th floor Jefferson, at 3:45 Friday, April 26, 2002, 4:00pm Harvard University Condensed Matter Seminar Division of Engineering and Applied Sciences Pierce Hall, Room 209 "OPTICAL MICROSYSTEMS: MEMS Technology in Optical Communication and Sensing" Professor Olav Solgaard Department of Electrical Engineering, Stanford University Refreshments will be served following the seminar --