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Condensed Matter Seminars

ics Condensed Matter
Tuesday, March 17, 2009
3:30 PM
Physics Building, Room 204
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Hussain Zaidi [Host: Genya Kolomeisky]
University of Virginia
"Geometrical Interpretation of the Non-universal Casimir Energy of An Infinite Cylindrical Wedge"
 Slideshow (PDF)
The majority of calculations in the literature on the Casimir energy of curved bodies focus on the universal part of the energy, implicitly assuming that the non-universal terms subtracted from the formal expression for the energy have no physical consequence. We explicitly calculate the non-universal terms for the particular case of an infinite cylindrical wedge and show that these terms are important quantities that arise out of the dependence of the surface tension and the bending/rigidity coefficients of a body on the energy cut-off. This lends support to a recent phenomenological argument in favor of a geometrical interpretation of the non-universal parts of the Casimir energy.

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