Events Calendar View

CSP Lunch Seminar
Oct 19, 2021
Markers of Chaotic Locomotion in Swimming C. elegans

Departmental Colloquium
Oct 21, 2021
Rydberg impurity in a quantum gas: a molecular Lego with quantum statistics
Impurity physics is a celebrated subdiscipline in condensed matter. Spectroscopy of impurity dynamics in atomic quantum Bose and Fermi gases has invigorated this line of research. Here, I will describe steps we've taken toward understanding how Rydberg quenches in such gases probe quantum correlations and quantum statistics, how oligomeric Rydberg molecules evolve to manybody dressed states and how Fermi statistics inhibits chemical reactivity. I will also touch upon cases when impurity excitations are not isotropic with implications for engineering chiral interactions.

CSP Lunch Seminar
Oct 26, 2021
Modeling Rippling and Aggregation Behaviors in Interacting Populations of Myxococcus xanthus

Departmental Colloquium
Oct 28, 2021
Collapse of the Collapse: Physicists Return to Reality
We note the recent demise of the collapse hypothesis, that an integral part of quantum mechanics is the "collapse" of the state of a system when measured. Using recent work of Anthony Rizzi, we show that the Ensemble Interpretation provides a simple and natural resolution to the problem of measurement in quantum mechanics. Along the way, we give a fuller explanation of the Ensemble Interpretation (in spite of the familiarsounding name, this is almost entirely unknown), measurement theory in general (correcting many common misconceptions), the resolution of the Schrodinger Cat experiment, Wigner’s Friend experiment, and the Extended Wigner’s Friend experiment. At the end we encourage discussion of how to deal with the pedagogical situation, given that almost all current QM textbooks are based on the (now defunct) collapse hypothesis.
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