190,797 research outputs found
Meromorphic solutions of recurrence relations and DRA method for multicomponent master integrals
We formulate a method to find the meromorphic solutions of higher-order
recurrence relations in the form of the sum over poles with coefficients
defined recursively. Several explicit examples of the application of this
technique are given. The main advantage of the described approach is that the
analytical properties of the solutions are very clear (the position of poles is
explicit, the behavior at infinity can be easily determined). These are exactly
the properties that are required for the application of the multiloop
calculation method based on dimensional recurrence relations and analyticity
(the DRA method).Comment: 20 pages, minor change
Total Born cross section of -pair production in relativistic ion collisions from differential equations
We apply the differential equation method to the calculation of the total
Born cross section of the process . We obtain explicit
expression for the cross section exact in the relative velocity of the nuclei.Comment: 5 pages, 2 figures, ancillary file MastersExpansion.m attached to
submissio
Single Chain Force Spectroscopy: Sequence Dependence
We study the elastic properties of a single A/B copolymer chain with a
specific sequence. We predict a rich structure in the force extension relations
which can be addressed to the sequence. The variational method is introduced to
probe local minima on the path of stretching and releasing. At given force, we
find multiple configurations which are separated by energy barriers. A
collapsed globular configuration consists of several domains which unravel
cooperatively. Upon stretching, unfolding path shows stepwise pattern
corresponding to the unfolding of each domain. While releasing, several cores
can be created simultaneously in the middle of the chain resulting in a
different path of collapse.Comment: 6 pages 3 figure
Feasibility of remote sensing for detecting thermal pollution. Part 1: Feasibility study. Part 2: Implementation plan
A feasibility study for the development of a three-dimensional generalized, predictive, analytical model involving remote sensing, in-situ measurements, and an active system to remotely measure turbidity is presented. An implementation plan for the development of the three-dimensional model and for the application of remote sensing of temperature and turbidity measurements is outlined
- …