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6 papers · 1 filter
Velocity and processivity of helicase unwinding of double-stranded nucleic acids
M. D. Betterton, Frank Julicher
Helicases are molecular motors which unwind double-stranded nucleic acids (dsNA) in cells. Many helicases move with directional bias on single-stranded (ss) nucleic acids, and coup…
Normal Forms for Symplectic Maps with Twist Singularities
H. R. Dullin, A. V. Ivanov, J. D. Meiss
We derive a normal form for a near-integrable, four-dimensional symplectic map with a fold or cusp singularity in its frequency mapping. The normal form is obtained for when the fr…
Laser ARPES, the sudden approximation, and quasiparticle-like peaks in Bi2Sr2CaCu2O8+delta
J. D. Koralek, J. F. Douglas, N. C. Plumb +9
A new low photon energy regime of angle resolved photoemission spectroscopy is accessed with lasers and used to study the superconductor Bi2Sr2CaCu2O8+delta. The low energy increas…
Teaching and learning physics: A model for coordinating physics instruction, outreach, and research
N. D. Finkelstein
This paper describes the development of a new university physics course designed to integrate physics, education, research, and community partnerships. The coordinated system of ac…
Mathai-Quillen Formalism
Siye Wu
We begin with the construction of Mathai-Quillen's Thom form. We also study the case with group actions, with a review of equivariant cohomology and then Mathai-Quillen's construct…
Constructing cell data for diagram algebras
R. M. Green, P. P. Martin
We show how the treatment of cellularity in families of algebras arising from diagram calculi, such as Jones' Temperley--Lieb wreaths, variants on Brauer's centralizer algebras, an…