THE BOSTON AREA PHYSICS CALENDAR
Week of Monday, March 23 - March 29, 1997
 
The Boston Area Physics Calendar is published weekly during 
the academic year by the Department of Physics and Astronomy 
at Tufts University.  You may send your announcements by 
e-mail (bapc@tuhepa.phy.tufts.edu) or FAX:(617-627-3878).  
We cannot accept announcements by telephone.  Entries should 
reach us no later than 11:00am on the Monday preceding the week 
of the event. ENTRIES RECEIVED AFTER THE DEADLINE WILL NOT 
BE PUBLISHED.

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Monday, Monday, March 24, 1997
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Monday, March 24, 12:00 p.m.

Massachusetts Institute of Technology
NFL Monday Seminar
MIT Room 12-132
 ``Elementary Exact Solution of the 2-Channel Kondo
Problem for the Mathematically Challenged''
DR. JAN VON DELFT
Universitat Karlsruhe 

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Monday, March 24, 4:00 p.m.

Massachusetts Institute of Technology
Nuclear Theory Seminar 
Center for Theoretical Physics Seminar Room
Building 6, Third Floor
 ``Final State Interaction Effects in Quasi-Elastic 
Electron Scattering at CEBAF Energies''
DR. SABINE JESCHONNEK
Massachusetts Institute of Technology 

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Monday, March 24, 4:00 p.m.

Worcester Polytechnic Institute
Colloquium 
Olin Hall, Room 107
 ``Integrated Optical Guided-Wave Components and Devices''
DR. JOSEPH P. DONNELLY
Lincoln Laboratory
Massachusets Institute of Technology 
Refreshments will be served in Olin 118 at 3:45 p.m.

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Tuesday, March 25, 1997
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Tuesday, March 25, 2:30 p.m.

Tufts University
Tufts-M.I.T.-CfA Joint Cosmology Seminar 
Anderson Hall, Room 313
 ``Density of Kinks after a Quench: When Symmetry Breaks,
How Large are the Pieceschar63''
DR. PABLO LAGUNA
Penn State University 
Refreshments will be served in Robinson 251 at 2:00 p.m.

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Tuesday, March 25, 3:45 p.m.

Boston University
Physics Colloquium 
SCI 107
 ``Gamma-Ray Astrophysics in the New Millenium''
 
Abstract:
 
I will discuss two new telescopes which are
            planned to begin operation in the year 2000, and
            which will open up a new window of astronomy from
            10 to 400 GeV: the AMS experiment on the International
            Space Station; and a Gamma Ray Observatory at White
            Mountain. 
            
PROFESSOR STEVE AHLEN
Boston University 
Refreshments will be served at 3:20 p.m.

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Tuesday, March 25, 4:00 p.m.

Brandeis University
Martin Weiner Lecture Series, Physics Colloquium 
Physics Building, Abelson 131
 ``e+ e- Physics with a Polarized Electron Beam at SLAC''
DR. FRANK TAYLOR
Massachusetts Institute of Technology 
Refreshments will be served in Room 333 at 3:30 p.m.

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Tuesday, March 25, 4:00 p.m.

Northeastern University
Center for Interdisciplinary Research on Complex Systems (CIRCS)
CIRCS Seminar 
Dana Building, Rom 114
 ``Longitudinal Coherence in the Vortex-Liquid Phase
of Type-II Superconductors''
DR. THOMAS HAGENAARS
Wurzberg University 

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Wednesday, March 26, 1997
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Wednesday, March 26, 4:00 p.m.

University of Massachusetts, Lowell
Spring Colloquia 
Olney 428
 ``Intersubband Lasing in Si-based Quantum Well Structures''
PROFESSOR GREGORY SUN
University of Massachusetts, Boston
Refreshments will be served at 3:30 p.m.
Contact Prof. Albert Altman [altmana@woods.uml.edu] for more information.

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Thursday, March 27, 1997

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Thursday, March 27, 12:30 p.m.

Boston University
Biophysics Seminar 
Room 352, Dept. of Physics, 
Metcalf Science and Engineering Bldg.,(590 Commonwealth Ave.)
 ``Mean-field Model and Molecular Dynamics Simulations of
Double-Stranded Semi-Flexible Polymers''
DR. TANNIEMOLA LIVERPOOL
Max-Planck Institute for Polymer Research, GERMANY 

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Thursday, March 27, 4:00 p.m.

Harvard-Smithsonian Center for Astrophysics
Scientific Colloquium 
60 Garden Street (Phillips Auditorium)
 ``What the High Velocity Clouds Are''
 
Abstract:
 
        The nature of the High Velocity Clouds (HVCs), clouds of hydrogen
gas that cannot be in circular rotation about the center of the Milky
Way, is one of the oldest unsolved problems of the interstellar
medium.  There is not even a consensus whether the clouds are galactic
or extragalactic.   Using several recently completed surveys of neutral
hydrogen, it will be shown that some of the HVCs must, however,
be extragalactic.   The kinematics, linewidths and angular sizes of the
entire ensemble will be shown to be consistent with clouds being in
orbit in the gravitational potential of the Local Group of galaxies.  A
simulation of the dynamical history of the cloud ensemble will be
presented which reproduces both the spatial distribution and velocity
distribution of the HVCs on the sky.  The implication of this work is
that the clouds are the detritus of the formation of the Local Group of
Galaxies.  The HVCs are also consistent with being local examples of
the Lyman Alpha clouds seen in absorption toward distant galaxies and
quasars. 
 
I would be happy to meet with the graduate students.  The best paper to
read is an annual review article by Wakker and van Woerden on High Velocity
Clouds that has not yet appeared in print.  I can send a ps version of the paper
or have it available in an anonymous ftp area for those who are interested.
 
DR. LEO BLITZ
Department of Astronomy
University of California, Berkeley 

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Thursday, March 27, 4:30 p.m.

Brown University
Condensed Matter Seminar 
Barus char38 enskip Holley Building
Room 751
 ``When Like Charges Attract''
PROFESSOR DAVID GRIER
University of Chicago 

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Friday, March 28, 1997

No Events Scheduled For Today. 

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A Friendly Reminder:

The Deadline for the March 30 -  April 5, 1997 Issue is: 

MONDAY, March 24, 1997 at 11:00 a.m. 


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