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13 papers · 1 filter
Diquark and light four-quark states
Ailin Zhang, Tao Huang, T. G. Steele
Four-quark states with different internal clusters are discussed within the constituent quark model. It is pointed out that the diquark concept is not meaningful in the constructio…
The inverse spectral problem for the discrete cubic string
Jennifer Kohlenberg, Hans Lundmark, Jacek Szmigielski
Given a measure on the real line or a finite interval, the "cubic string" is the third order ODE where is a spectral parameter. If equipped with Dirichlet-like…
Short-time fluctuations of displacements and work
Ramses van Zon, S. S. Ashwin, E. G. D. Cohen
A recent theorem giving the initial behavior of very short-time fluctuations of particle displacements in classical many-body systems is discussed. It has applications to equilibri…
On the Standard Approach to Renormalization Group Improvement
F. A. Chishtie, V. Elias, R. B. Mann +2
Two approaches to renormalization-group improvement are examined: the substitution of the solutions of running couplings, masses and fields into perturbatively computed quantities…
Multivariate characterization of hydrogen Balmer emission in cataclysmic variables
Gordon E. Sarty, Kinwah Wu
The ratios of hydrogen Balmer emission line intensities in cataclysmic variables are signatures of the physical processes that produce them. To quantify those signatures relative t…
Resonant transparency of materials with negative permittivity
E. Fourkal, I. Velchev, C-M. Ma +1
It is shown that the transparency of opaque material with negative permittivity exhibits resonant behavior. The resonance occurs as a result of the excitation of the surface waves…