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pro vyhledávání: '"Richard Friedberg"'
Autor:
Richard Friedberg, Jamal T. Manassah
Publikováno v:
Symmetry, Vol 14, Iss 8, p 1505 (2022)
We report computer studies showing how the duration of memory for storage and retrieval of a classical bit can be increased to 100 times the decay time of an isolated atom, with no use of high-tech cold-atom preparations recently developed in the lig
Externí odkaz:
https://doaj.org/article/f406893a1c5b43c6a0268536dab63fc9
Autor:
Richard Friedberg, Jamal T. Manassah
Publikováno v:
Atoms, Vol 10, Iss 2, p 49 (2022)
We review the definition of cooperative Lamb shift originally introduced by ourselves and S. R. Hartmann in 1973. We point out that the definition specified the preparation of a sample of identical two-level atoms prepared with partial excitation by
Externí odkaz:
https://doaj.org/article/a6de6a1ed4fc4b76b6b0fd78d881008c
Autor:
Richard Friedberg, Jamal T. Manassah
Publikováno v:
Optics Communications. 501:127389
Using the basis formed by the eigenfunctions of the Lienard–Wiechert Green function, we develop and test an algorithm for solving exactly the Maxwell–Bloch equations in (1-space, 1-time). We use this algorithm to search for patterns in the soluti
Autor:
Richard Friedberg, P. C. Hohenberg
This paper presents a minimal formulation of nonrelativistic quantum mechanics, by which is meant a formulation which describes the theory in a succinct, self-contained, clear, unambiguous and of course correct manner. The bulk of the presentation is
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::55b373749a45b9ad0718124ae0c6cc80
Autor:
Jamal T. Manassah, Richard Friedberg
Publikováno v:
Chemical Physics Letters. :118-122
Using the continuity conditions of the tangential component of the magnetic flux density and of the electric field at the core-metal and metal-medium boundaries and the Drude model for a noble metal, we give the equations relating the plasmonic eigen
Autor:
Richard Friedberg, Jamal T. Manassah
Publikováno v:
Physics Letters A. 374:3389-3395
We explore steady states of an open, no end-mirrors, low-Q cw laser pumped above the threshold for laser oscillations. We find that the spatial field profile of the steady state just above the threshold is the same as that of the eigenmode that domin
Autor:
Richard Friedberg, Jamal T. Manassah
Publikováno v:
Physics Letters A. 374:1648-1659
We give the analytic expressions for the initial Cooperative Decay Rate and Cooperative Lamb Shift for a spherical cloud of two-level atoms for the cases of uniform and Gaussian number density distributions. We derive these expressions in both scalar
Autor:
Richard Friedberg
Publikováno v:
Annals of Physics. 325:345-358
A new formula has been given recently by A.A. Svidzinsky and M.O. Scully to describe the temporal evolution of the excitation function β t , r → in a large sphere satisfying the Markov condition after excitation by a single photon. This formula is
Autor:
Richard Friedberg, Jamal T. Manassah
Publikováno v:
Physics Letters A. 373:4416-4425
We derive pseudo-orthogonality relations for both the magnetic and electric eigenmodes of a system of two-level atoms in a sphere configuration. We verify numerically that an arbitrary vector field can be reconstructed to a great accuracy from these
Autor:
Richard Friedberg, Sophia Yancopoulos
Publikováno v:
Journal of Computational Biology. 16:1311-1338
We extend the double cut and join operation (DCJ) paradigm to perform genome rearrangements on pairs of genomes having unequal gene content and/or multiple copies by permitting genes in one genome which are completely or partially unmatched in the ot