In situ measurement of the dynamic structure factor in ultracold quantum gases

We propose an experimental setup to efficiently measure the dynamic structure factor of ultracold quantum gases. Our method uses the interaction of the trapped atomic system with two different cavity modes, which are driven by external laser fields. By measuring the output fields of the cavity the dynamic structure factor of the atomic system can be determined. Contrary to previous approaches the atomic system is not destroyed during the measurement process.Comment: 5 pages, 3 figure

The William A. Hinds American Communities Collection

This article discusses the life and contributions of William A. Hinds, who in his book American Communities, tried to document communistic societies within America, such as the Oneida Community. The article includes a list of the communities and associations that Hinds documented

Multicritical behavior in dissipative Ising models

We analyze theoretically the many-body dynamics of a dissipative Ising model in a transverse field using a variational approach. We find that the steady state phase diagram is substantially modified compared to its equilibrium counterpart, including the appearance of a multicritical point belonging to a different universality class. Building on our variational analysis, we establish a field-theoretical treatment corresponding to a dissipative variant of a Ginzburg-Landau theory, which allows us to compute the upper critical dimension of the system. Finally, we present a possible experimental realization of the dissipative Ising model using ultracold Rydberg gases.Comment: 8 pages, 4 figure

Foreword and Preface, from Courier, Vol. XXVIII, No. 2, Fall 1993

FOREWARD: When in 1962, I first visited the rare book collection of the Syracuse University Library to begin researching the history of the Oneida Community, I explored the foundation of what is now a distinguished and growing body of material related to America\u27s most complex communal venture. That foundation had been laid when Lester G. Wells, then curator, acquired a full run of the Community periodicals and a substantial body of pamphlets. The O. C. Collection as outlined by Wells in his 1961 bibliography* provided me with enough data to grasp the details of Community life reported in their own periodicals. Since then many researchers have journeyed to Syracuse to mine those periodicals and pamphlets (in 1973 they were made available on microfilm to other libraries), and I am sure that scholars will continue to explore the primary sources gathered by Mark Weimer and opened in 1993. PREFACE: SEVENTY YEARS AGO -in reply to a letter from Hope Emily Allen that was full of trepidation about the handling of the Oneida Community\u27s legacy, especially by one Mrs. Smith-George Bernard Shaw wrote: I agree with you that only a symposium could do justice to the Oneida Creek Community\u27s history: but the difficulty seems to be that the witnesses wont sympose. This being so, there is nothing for it but to let Mrs. Smith tell her history and provoke retorts, so that we shall get the symposium in different covers instead of in one book.1 Hope Allen, a respected medievalist, was born in the Mansion House a few years after the breakup of the Oneida Community. She became the Community\u27s archivist after her return as an adult to Oneida. Shaw\u27s keen interest in the Oneida Community was most fully articulated in his essay The Perfectionist Experiment at Oneida Creek , which appeared as part of The Revolutionist Handbook appended to Man and Superman (1903)

Quantum critical behavior in strongly interacting Rydberg gases

We study the appearance of correlated many-body phenomena in an ensemble of atoms driven resonantly into a strongly interacting Rydberg state. The ground state of the Hamiltonian describing the driven system exhibits a second order quantum phase transition. We derive the critical theory for the quantum phase transition and show that it describes the properties of the driven Rydberg system in the saturated regime. We find that the suppression of Rydberg excitations known as blockade phenomena exhibits an algebraic scaling law with a universal exponent.Comment: 4 pages, 3 figures, published versio

Artists\u27 Papers in the George Arents Research Library: Sources for the Study of Twentieth-Century American Art

For nearly thirty years the George Arents Research Library for Special Collections at Syracuse University has actively acquired primary materials to support research and study in the field of art history including, as outlined in an internal collection development statement of 1961, the papers of architects, artists, sculptors, industrial designers, cartoonists, photographers, art critics, educators, and the records of professional associations and galleries . Beginning with the gift of the papers of sculptors James Earle Fraser, Laura Gardin Fraser, and Anna Hyatt Huntington in the 1960s, and continuing to the recent acquisition of collections relating to Diego Rivera and Philip Evergood, the Arents Library has played a leading role in documenting the work of twentieth-century artists. Sculptors, women artists, and emigre artists are particularly well represented. Over the past decade, the Library has actively cooperated with the Smithsonian Institution\u27s Archives of American Art to consolidate and preserve artist collections by the preparation and distribution of microfilm copies of its holdings

Mesoscopic Rydberg Gate based on Electromagnetically Induced Transparency

We demonstrate theoretically a parallelized C-NOT gate which allows to entangle a mesoscopic ensemble of atoms with a single control atom in a single step, with high fidelity and on a microsecond timescale. Our scheme relies on the strong and long-ranged interaction between Rydberg atoms triggering Electromagnetically Induced Transparency (EIT). By this we can robustly implement a conditional transfer of all ensemble atoms among two logical states, depending on the state of the control atom. We outline a many body interferometer which allows a comparison of two many-body quantum states by performing a measurement of the control atom.Comment: published versio

Raltegravir, tenofovir, and emtricitabine in an HIV-Infected patient with HCV chronic hepatitis, NNRTI intolerance and protease inhibitors-induced severe liver toxicity

<p>Abstract</p> <p>Background</p> <p>in HIV-infected patients with HCV-related chronic hepatitis, liver impairment and drug toxicity may substantially reduce the number of possible therapeutic options.</p> <p>Case Description</p> <p>we here describe the case of an HCV-HIV coinfected woman who had repeated severe episodes of drug-related liver toxicity with indinavir, saquinavir, fosamprenavir, and darunavir, with minimal further therapeutic options left in this class. Previous treatment-limiting side effects with efavirenz and nevirapine also precluded use of non-nucleoside reverse transcriptase inhibitors. Introduction of an integrase-inhibitor regimen based on raltegravir, tenofovir, and emtricitabine allowed a prompt achievement of undetectable viral load and a substantial rise of CD4 count to high levels, with no subsequent episodes of hepatic toxicity, and no other side effects.</p> <p>Conclusions</p> <p>given the relatively common prevalence of HCV-related chronic hepatitis among people with HIV, raltegravir might represent an important alternative option for a substantial number of patients who cannot be treated with protease inhibitors or NNRTI because of drug-related hepatic toxicity.</p

Local effective dynamics of quantum systems: A generalized approach to work and heat

By computing the local energy expectation values with respect to some local measurement basis we show that for any quantum system there are two fundamentally different contributions: changes in energy that do not alter the local von Neumann entropy and changes that do. We identify the former as work and the latter as heat. Since our derivation makes no assumptions on the system Hamiltonian or its state, the result is valid even for states arbitrarily far from equilibrium. Examples are discussed ranging from the classical limit to purely quantum mechanical scenarios, i.e. where the Hamiltonian and the density operator do not commute.Comment: 5 pages, 1 figure, published versio