48,890 research outputs found
Analysis of photon-atom entanglement generated by Faraday rotation in a cavity
Faraday rotation based on AC Stark shifts is a mechanism that can entangle
the polarization variables of photons and atoms. We analyze the structure of
such entanglement by using the Schmidt decomposition method. The
time-dependence of entanglement entropy and the effective Schmidt number are
derived for Gaussian amplitudes. In particular we show how the entanglement is
controlled by the initial fluctuations of atoms and photons.Comment: 6 pages, 3 figure
Nurses Alumni Association Bulletin, Fall 2000
2000 - 2001 Meeting Date Calendar
2001 Annual Luncheon & Meeting Notice
2000 Fall Social
Officers and Committee Chairs
Bulletin Publication Committee
The President\u27s Message
Treasurer\u27s Report
Resume of Minutes
Alumni Office News
Committee Reports Nurses Relief Trust Fund Clara Melville - Adele Lewis Scholarship Fund Satellite Report - Harrisburg Satellite The Fall Luncheon Nominating Alumni Bulletin Development
News about our Graduates
Presentation on Leadership -Tribute to Janet C. Hindson
Thank You Patient Assimilators
Third Janet C. Hindson Award
Janet C. Hindson Award Qualifications
Pinning Ceremony
Jeff HOPE
Keepsakes
Memoirs
Happy Birthday
50th Anniversary Class
Luncheon Photos
Kodak Moment
In Memoriam, Names of Deceased Graduates
Class News
Scholarship Fund Application
Certification Reimbursement Application
Relief Fund Application
Pins, Transcripts, Class Address List, Change of Address Forms
Notes
Campus Map
List of Hotel
Nurses Alumni Association Bulletin, Fall 2001
2001 - 2002 Meeting Date Calendar
2002 Annual Luncheon & Meeting Notice
Bulletin Publication Committee, Officers and Committee Chairs
The President\u27s Message
Treasurer\u27s Financial Report
Auditor\u27s Financial Report
Alumni Scholarship Fund
Resume of Minutes
Alumni Office News
Committee Reports Nurses Relief Trust Fund Clara Melville - Adele Lewis Scholarship Fund Nominating Social -Annual May Luncheon Social - Fall Luncheon of 2000 Central PA Satellite Committee Report Bulletin Development
Annual Giving Contributors
News About Our Graduates
Janet C. Hindson Award
Janet C. Hindson Award - Qualifications
Army Nurse Corps Nursing 101
A Loving Aunt\u27s Thoughts
Volunteers In Medicine
Happy Birthday - To Be 80 Or More
Luncheon Photos Collage
Fiftieth Anniversary - Class of 1951
In Memoriam, Names of Deceased Graduates
Class News
Application for Nurses Scholarship Fund
Application for Certification
Application for Relief Fund Benefits
Miscellaneous: Pins, Transcripts, Class Address List, Change of Address Forms
Campus Map
List of Hotels
Note
Loss of purity by wave packet scattering at low energies
We study the quantum entanglement produced by a head-on collision between two
gaussian wave packets in three-dimensional space. By deriving the two-particle
wave function modified by s-wave scattering amplitudes, we obtain an
approximate analytic expression of the purity of an individual particle. The
loss of purity provides an indicator of the degree of entanglement. In the case
the wave packets are narrow in momentum space, we show that the loss of purity
is solely controlled by the ratio of the scattering cross section to the
transverse area of the wave packets.Comment: 7 pages, 1 figur
S-wave quantum entanglement in a harmonic trap
We analyze the quantum entanglement between two interacting atoms trapped in
a spherical harmonic potential. At ultra-cold temperature, ground state
entanglement is generated by the dominated s-wave interaction. Based on a
regularized pseudo-potential Hamiltonian, we examine the quantum entanglement
by performing the Schmidt decomposition of low-energy eigenfunctions. We
indicate how the atoms are paired and quantify the entanglement as a function
of a modified s-wave scattering length inside the trap.Comment: 10 pages, 5 figures, to be apear in PR
PT-Symmetric Quantum Electrodynamics and Unitarity
More than 15 years ago, a new approach to quantum mechanics was suggested, in
which Hermiticity of the Hamiltonian was to be replaced by invariance under a
discrete symmetry, the product of parity and time-reversal symmetry,
. It was shown that if is unbroken, energies were,
in fact, positive, and unitarity was satisifed. Since quantum mechanics is
quantum field theory in 1 dimension, time, it was natural to extend this idea
to higher-dimensional field theory, and in fact an apparently viable version of
-invariant quantum electrodynamics was proposed. However, it has
proved difficult to establish that the unitarity of the scattering matrix, for
example, the K\"all\'en spectral representation for the photon propagator, can
be maintained in this theory. This has led to questions of whether, in fact,
even quantum mechanical systems are consistent with probability conservation
when Green's functions are examined, since the latter have to possess physical
requirements of analyticity. The status of QED will be reviewed
in this report, as well as the general issue of unitarity.Comment: 13 pages, 2 figures. Revised version includes new evidence for the
violation of unitarit
Solid particle erosion and viscoelastic properties of thermoplastic polyurethanes
The wear resistance of several thermoplastic polyurethanes (TPUs) having different chemical nature and micronscale
arrangement of the hard and soft segments has been investigated by means of erosion and abrasion tests. The goal was
correlating the erosion performances of the materials to their macroscopic mechanical properties. Unlike conventional tests,
such as hardness and tensile measurements, viscoelastic analysis proved to be a valuable tool to study the erosion resistance
of TPUs. In particular, a strict correlation was found between the erosion rate and the high-frequency (~10^7 Hz) loss modulus.
The latter reflects the actual ability of TPU to dissipate the impact energy of the erodent particles
Acid-Labile Traceless Click Linker for Protein Transduction
Intracellular delivery of active proteins presents an interesting approach in research and therapy. We created a protein transduction shuttle based on a new traceless click linker that combines the advantages of click reactions with implementation of reversible pH-sensitive bonds. The azidomethyl-methylmaleic anhydride (AzMMMan) linker was found compatible with different click chemistries, demonstrated in bioreversible protein modification with dyes, polyethylene glycol, or a transduction carrier. Linkages were stable at physiological pH but reversible at the mild acidic pH of endosomes or lysosomes. We show that pH-reversible attachment of a defined endosome-destabilizing three-arm oligo(ethane amino)amide carrier generates an effective shuttle for protein delivery. The cargo protein nlsEGFP, when coupled via the traceless AzMMMan linker, experiences efficient cellular uptake and endosomal escape into the cytosol, followed by import into the nucleus. In contrast, irreversible linkage to the same shuttle hampers nuclear delivery of nlsEGFP which after uptake remains trapped in the cytosol. Successful intracellular delivery of bioactive Ăź-galactosidase as a model enzyme was also demonstrated using the pH-controlled shuttle system
An H-Theorem for the Lattice Boltzmann Approach to Hydrodynamics
The lattice Boltzmann equation can be viewed as a discretization of the
continuous Boltzmann equation. Because of this connection it has long been
speculated that lattice Boltzmann algorithms might obey an H-theorem. In this
letter we prove that usual nine-velocity models do not obey an H-theorem but
models that do obey an H-theorem can be constructed. We consider the general
conditions a lattice Boltzmann scheme must satisfy in order to obey an
H-theorem and show why on a lattice, unlike the continuous case, dynamics that
decrease an H-functional do not necessarily lead to a unique ground state.Comment: 6 pages, latex, no figures, accepted for publication in Europhys.
Let
- …