3,779 research outputs found
[Review of] Jeffrey Rubin-Dorsky and Shelley Fisher Fishkin. People of the Book: Holstein Thirty Scholars Reflect on their Jewish Identity
People of the Book is an important contribution to ethnic studies and identity politics. It is a dense and reflective collection of essays which defines Judaism in personal and scholarly contexts. As one of the contributors, Nancy Miller, says: It\u27s not easy to write about being Jewish (168). The editors divide the essays into four parts. After the introductory essay, Part 2, Transformations, examines how the authors\u27 activism grows out of their Jewish heritage. Negotiations, looks at Jewish definition in the context of other Jewish and non-Jewish communities, and Explorations, shows the relationship between being Jewish and pursuing a discipline. Meditations, is an application of previous themes to specific literary works. Certain concerns cross over all four sections to make the search for identity continuous and shared
[Review of] Paul Kivel, Uprooting Racism: How White People Can Work for Racial Justice
Uprooting Racism, by Paul Kivel, is a deceptively simple book which covers a lot of ground. Kivel defines racism, places it in context, specifies its effect on certain groups, and shows how to fight it. He begins with, This is a book about racism for white people and goes on to explain what it means to be white in a society which institutionalizes oppression and social injustice based on a definition of whiteness. Privilege, benefits, seeing whiteness as normative, and tactics which minimize, deny, or avoid responsibility for racism are all discussed succinctly and directly
Effective Field Theory in Nuclear Physics
The Electromagnetic and Hadronic Physics sub-community of nuclear physics
held a town hall meeting at Jefferson Lab during November 30 to December 4 of
2000. This is is our combined contribution to the white paper that will result
from this meeting.Comment: 13 pages, 2 figures, late
A Brief Introduction to Chiral Perturbation Theory
A brief introduction to the subject of chiral perturbation theory (pt)
is presented, including a discussion of effective field theory and applications
of pt in the arena of purely mesonic interactions as well as in the sector.Comment: 15 pages, talk given at TAPS detector workshop, Rez, Czech Republic,
Sept. 1999, to be published in Czech. J. Phy
Chiral Symmetry and the Parity-Violating Yukawa Coupling
We construct the complete SU(2) parity-violating (PV)
interaction Lagrangian with one derivative, and calculate the chiral
corrections to the PV Yukawa coupling constant through in the leading order of heavy baryon expansion. We
discuss the relationship between the renormalized \hpi, the measured value of
\hpi, and the corresponding quantity calculated microscopically from the
Standard Model four-quark PV interaction.Comment: RevTex, 26 pages + 5 PS figure
Ground state overlap and quantum phase transitions
We present a characterization of quantum phase transitions in terms of the
the overlap function between two ground states obtained for two different
values of external parameters. On the examples of the Dicke and XY models, we
show that the regions of criticality of a system are marked by the extremal
points of the overlap and functions closely related to it. Further, we discuss
the connections between this approach and the Anderson orthogonality
catastrophe as well as with the dynamical study of the Loschmidt echo for
critical systems.Comment: 5 pages. Version to be published, title change
On the parameterization dependence of the energy momentum tensor and the metric
We use results by Kirilin to show that in general relativity the nonleading
terms in the energy-momentum tensor of a particle depends on the
parameterization of the gravitational field. While the classical metric that is
calculated from this source, used to define the leading long-distance
corrections to the metric, also has a parameteriztion dependence, it can be
removed by a coordinate change. Thus the classical observables are
parameterization independent. The quantum effects that emerge within the same
calculation of the metric also depend on the parameterization and a full
quantum calculation requires the inclusion of further diagrams. However, within
a given parameterization the quantum effects calculated by us in a previous
paper are well defined. Flaws of Kirilin's proposed alternate metric definition
are described and we explain why the diagrams that we calculated are the
appropriate ones.Comment: 8 pages, 2 figure
Two-mode entanglement in two-component Bose-Einstein condensates
We study the generation of two-mode entanglement in a two-component
Bose-Einstein condensate trapped in a double-well potential. By applying the
Holstein-Primakoff transformation, we show that the problem is exactly solvable
as long as the number of excitations due to atom-atom interactions remains low.
In particular, the condensate constitutes a symmetric Gaussian system, thereby
enabling its entanglement of formation to be measured directly by the
fluctuations in the quadratures of the two constituent components [Giedke {\it
et al.}, Phys. Rev. Lett. {\bf 91}, 107901 (2003)]. We discover that
significant two-mode squeezing occurs in the condensate if the interspecies
interaction is sufficiently strong, which leads to strong entanglement between
the two components.Comment: 22 pages, 4 figure
Model Calculation of Electron-Phonon Couplings in a Dimer with a Non-Degenerate Orbital
We evaluate all the electron-phonon couplings derived from the one-body
electronic interactions, in both the adiabatic and extreme non-adiabatic limit,
for a dimer with a non-degenerate orbital built from atomic wave functions of
Gaussian shape. We find largely different values of the coupling parameters in
the two cases, as well as different expressions of the corresponding terms in
the Hamiltonian.Comment: 5 postscript figure
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