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7 papers · 1 filter
The weak pigeonhole principle for function classes in S^1_2
Norman Danner, Chris Pollett
It is well known that S^1_2 cannot prove the injective weak pigeonhole principle for polynomial time functions unless RSA is insecure. In this note we investigate the provability o…
High Resolution Polar Kerr Effect Measurements of Sr2RuO4: Evidence for Broken Time Reversal Symmetry in the Superconducting State
Jing Xia, Maeno Yoshiteru, Peter T. Beyersdorf +2
Polar Kerr effect in the spin-triplet superconductor Sr2RuO4 was measured with high precision using a Sagnac interferometer with a zero-area Sagnac loop. We observed non-zero Kerr…
What is paradoxical about the "Three-box paradox"?
J. Finkelstein
This paper is a comment on quant-ph/0606067 by Ravon and Vaidman, in which they defend the position that the ``three-box paradox'' is indeed paradoxical.
Spitzer observations of hydrogen deuteride
David A. Neufeld, Joel D. Green, David J. Hollenbach +7
We report the detection of interstellar hydrogen deuteride (HD) toward the supernova remnant IC443, and the tentative detection of HD toward the Herbig Haro objects HH54 and HH7 an…
Modified Sagnac interferometer for high-sensitivity magneto-optic measurements atcryogenic temperatures
Jing Xia, Peter T. Beyersdorf, Martin M. Fejer +1
We describe a geometry for a Sagnac interferometer with a zero-area Sagnac loop for measuring magneto-optic Kerr effect (MOKE) at cryogenic temperatures. The apparatus is capable o…
Electro-Magnetic Earthquake Bursts and Critical Rupture of Peroxy Bond Networks in Rocks
F. Freund, D. Sornette
We propose a mechanism for the low frequency electromagnetic emissions and other electromagnetic phenomena which have been associated with earthquakes. The mechanism combines the c…