cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Noncommutative weak Orlicz spaces and martingale inequalities
Creators: name: Bekjan, Turdebek N.
name: Chen, Zeqian
name: Liu, Peide
name: Jiao, Yong
Publisher: name: arXiv
Year: 2010
Subjects: subject: Functional Analysis (math.FA)
subject: FOS: Mathematics

description: This paper is devoted to the study of noncommutative weak Orlicz spaces and martingale inequalities. Marcinkiewicz interpolation theorem is extended to include noncommutative weak Orlicz spaces as interpolation classes. In particular, we prove the weak type $Φ$-moment Burkholder-Gundy inequality for noncommutative martingales through establishing a weak type $Φ$-moment noncommutative Khintchine's inequality for Rademacher's random variables.
description: 17 pages. One author (Y.J) is added
Telegraph from Frederick P. Keppel to Gunnar Myrdal, July 25, 1940
Creators: name: Keppel, Frederick P. (Frederick Paul), 1875-1943
Publisher: name: Columbia University
Year: 2019
Subjects: Race relations
African Americans--Social conditions
Endowments

description: Frederick P. Keppel writes to Gunnar Myrdal to touch base regarding Myrdal's return from Sweden to lead Carnegie-Myrdal Study and the closure of the study's New York offices at the end of August.
Non-Markovian Relaxation of a Three-Level System: Quantum Trajectory Approach
Creators: name: Jing, Jun
name: Yu, Ting
Publisher: name: arXiv
Year: 2010
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The non-Markovian dynamics of a three-level quantum system coupled to a bosonic environment is a difficult problem due to the lack of an exact dynamic equation such as a master equation. We present for the first time an exact quantum trajectory approach to a dissipative three-level model. We have established a convolutionless stochastic Schrödinger equation called time-local quantum state diffusion (QSD) equation without any approximations, in particular, without Markov approximation. Our exact time-local QSD equation opens a new avenue for exploring quantum dynamics for a higher dimensional quantum system coupled to a non-Markovian environment.
description: 4 pages, 2 figures
The dynamics of finite-size settling particles
Creators: name: Doychev, Todor
Publisher: name: Karlsruhe
Year: 2014
Subjects: multiphase particle-laden flows
suspensions
DNS

description: Direct numerical simulations of the gravity-induced settling of finite-size particles in triply periodic domains has been performed under dilute conditions. We consider rigid, heavy, finite-size spherical particles. Depending on the particle settling regime the particles may exhibit strong clustering. The particles inside clusters experience larger settling velocities than the average. The mean particle wake is significantly attenuated by the motion of the particles.
Laboratory Tests of the Galileon
Creators: name: Brax, Philippe
name: Burrage, Clare
name: Davis, Anne-Christine
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The Galileon model is a ghost free scalar effective field theory containing higher derivative terms that are protected by the Galileon symmetry. The presence of a Vainshtein screening mechanism allows the scalar field to couple to matter without mediating unacceptably large fifth forces in the solar system. We describe how laboratory measurements of the Casimir effect and possible deviations from Newtonian gravity can be used to search for Galileon scalar fields. Current experimental measurements are used to bound a previously unconstrained combination of Galileon parameters.
description: 14 pages. v2 updated discussion of the relevance of Casimir experiments
Confirmation of 1RXS J165443.5-191620 as an intermediate polar and its orbital and spin periods
Creators: name: Scaringi, S.
name: Connolly, S.
name: Patterson, J.
name: Thorstensen, J. R.
name: Uthas, H.
name: Knigge, C.
name: Vican, L.
name: Monard, B.
name: Rea, R.
name: Krajci, T.
name: Lowther, S.
name: Myers, G.
name: Bolt, G.
name: Dieball, A.
name: Groot, P. J.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Aims: We investigate the physical nature of the X-ray emitting source 1RXS J165443.5-191620 through optical photometry and time-resolved spectroscopy. Methods: Optical photometry is obtained from a variety of telescopes all over the world spanning about 27 days. Additionally, time-resolved spectroscopy is obtained from the MDM observatory. Results: The optical photometry clearly displays modulations consistent with those observed in magnetic cataclysmic variables: a low-frequency signal interpreted as the orbital period, a high-frequency signal interpreted as the white dwarf spin period, and an orbital sideband modulation. Our findings and interpretations are further confirmed through optical, time-resolved, spectroscopy that displays H-alpha radial velocity shifts modulated on the binary orbital period. Conclusion: We confirm the true nature of 1RXS J165443.5-191620 as an intermediate polar with a spin period of 546 seconds and an orbital period of 3.7 hours. In particular, 1RXS J165443.5-191620 is part of a growing subset of intermediate polars, all displaying hard X-ray emission above 15keV, white dwarf spin periods below 30 minutes, and spin-to-orbital ratios below 0.1.
description: 7 pages, 9 figures, 6 tables, accepted for publication in A&A
Rapid cooling of neutron star in Cassiopeia A and r-mode damping in the core
Creators: name: Yang, Shu-Hua
name: Pi, Chun-Mei
name: Zheng, Xiao-Ping
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We proposed alternative explanation to the rapid cooling of neutron star in Cas A. It is suggested that the star is experiencing the recovery period following the r-mode heating process,assuming the star is differentially rotating. Like the neutron-superfluidity-triggering model, our model predicts the rapid cooling will continue for several decades. However, the behavior of the two models has slight differences, and they might be distinguished by observations in the near future.
On the estimation of smooth densities by strict probability densities at optimal rates in sup-norm
Creators: name: Giné, Evarist
name: Sang, Hailin
Publisher: name: arXiv
Year: 2010
Subjects: subject: Statistics Theory (math.ST)
subject: FOS: Mathematics
subject: 62G07

description: It is shown that the variable bandwidth density estimator proposed by McKay (1993a and b) following earlier findings by Abramson (1982) approximates density functions in $C^4(\mathbb R^d)$ at the minimax rate in the supremum norm over bounded sets where the preliminary density estimates on which they are based are bounded away from zero. A somewhat more complicated estimator proposed by Jones McKay and Hu (1994) to approximate densities in $C^6(\mathbb R)$ is also shown to attain minimax rates in sup norm over the same kind of sets. These estimators are strict probability densities.
description: 29 pages
Introduction : Sustainable planning perspective approaches in Thessaloniki
Creators: name: Greinke, Lena
name: Mehnen, Nora
name: Lamberg, Jonas
name: Triantis, Loukas
Publisher: name: Hannover : Institutionelles Repositorium der Leibniz Universität Hannover
Year: 2023
Subjects: subject: Dewey Decimal Classification::700 | Künste, Bildende Kunst allgemein::720 | Architektur

description: [no abstract available]
Letter from Gunnar Myrdal to Frederick P. Keppel, June 26, 1940
Creators: name: Myrdal, Gunnar, 1898-1987
Publisher: name: Columbia University
Year: 2019
Subjects: Race relations
African Americans--Social conditions
Endowments

description: Gunnar Myrdal discusses the possibility that Nazi aggression towards Sweden may prevent his return to lead the Carnegie-Myrdal Study.
Memorandum from Charles Dollard to Frederick P. Keppel and Eliza Gaylord, July 12, 1940
Creators: name: Dollard, Charles, 1907-1977
Publisher: name: Columbia University
Year: 2019
Subjects: Race relations
African Americans--Social conditions
Endowments

description: Notes from meeting between Frederick P. Keppel, Charles Dollard and Samuel A. Stouffer to discuss Gunnar Myrdal's latest letter from Sweden and plans for selecting material to be included in published version of the Carnegie-Myrdal Study.
Letter from T. Arnold Hill to Richard Sterner, July 22, 1940
Creators: name: Hill, T. Arnold (Thomas Arnold), 1888-1947
Publisher: name: Columbia University
Year: 2019
Subjects: Race relations
African Americans--Social conditions
Endowments

description: Letter enclosed with review copies of T. Arnold Hill's questionnaires on Relief and Housing for the Carnegie-Myrdal Study.
Search for rare and forbidden decays of charm and charmed-strange mesons to final states h^+- e^-+ e^+
Creators: name: CLEO Collaboration
name: Rubin, P.
name: Lowrey, N.
name: Mehrabyan, S.
name: Selen, M.
name: Wiss, J.
name: Libby, J.
name: Kornicer, M.
name: Mitchell, R. E.
name: Shepherd, M. R.
name: Tarbert, C. M.
name: Besson, D.
name: Pedlar, T. K.
name: Xavier, J.
name: Cronin-Hennessy, D.
name: Hietala, J.
name: Zweber, P.
name: Dobbs, S.
name: Metreveli, Z.
name: Seth, K. K.
name: Tomaradze, A.
name: Xiao, T.
name: Brisbane, S.
name: Martin, L.
name: Powell, A.
name: Spradlin, P.
name: Wilkinson, G.
name: Mendez, H.
name: Ge, J. Y.
name: Miller, D. H.
name: Shipsey, I. P. J.
name: Xin, B.
name: Adams, G. S.
name: Hu, D.
name: Moziak, B.
name: Napolitano, J.
name: Ecklund, K. M.
name: Insler, J.
name: Muramatsu, H.
name: Park, C. S.
name: Pearson, L. J.
name: Thorndike, E. H.
name: Yang, F.
name: Ricciardi, S.
name: Thomas, C.
name: Artuso, M.
name: Blusk, S.
name: Mountain, R.
name: Skwarnicki, T.
name: Stone, S.
name: Wang, J. C.
name: Zhang, L. M.
name: Bonvicini, G.
name: Cinabro, D.
name: Lincoln, A.
name: Smith, M. J.
name: Zhou, P.
name: Zhu, J.
name: Naik, P.
name: Rademacker, J.
name: Asner, D. M.
name: Edwards, K. W.
name: Randrianarivony, K.
name: Tatishvili, G.
name: Briere, R. A.
name: Vogel, H.
name: Onyisi, P. U. E.
name: Rosner, J. L.
name: Alexander, J. P.
name: Cassel, D. G.
name: Das, S.
name: Ehrlich, R.
name: Fields, L.
name: Gibbons, L.
name: Gray, S. W.
name: Hartill, D. L.
name: Heltsley, B. K.
name: Kreinick, D. L.
name: Kuznetsov, V. E.
name: Patterson, J. R.
name: Peterson, D.
name: Riley, D.
name: Ryd, A.
name: Sadoff, A. J.
name: Shi, X.
name: Sun, W. M.
name: Yelton, J.
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We have searched for flavor-changing neutral current decays and lepton-number-violating decays of D^+ and D^+_s mesons to final states of the form h^+- e^-+ e^+, where h is either πor K. We use the complete samples of CLEO-c open-charm data, corresponding to integrated luminosities of 818 pb^-1 at the center-of-mass energy E_CM = 3.774 GeV containing 2.4 x 10^6 D^+D^- pairs and 602 pb^-1 at E_CM = 4.170 GeV containing 0.6 x 10^6 D^*+-_s D^-+_s pairs. No signal is observed in any channel, and we obtain 90% confidence level upper limits on branching fractions B(D^+ --> π^+ e^+ e^-) < 5.9 x 10^-6, B(D^+ --> π^- e^+ e^+) < 1.1 x 10^-6, B(D^+ --> K^+ e^+ e^-) < 3.0 x 10^-6, B(D^+ --> K^- e^+ e^+) < 3.5 x 10^-6, B(D^+_s --> π^+ e^+ e^-) < 2.2 x 10^-5, B(D^+_s --> π^- e^+ e^+) < 1.8 x 10^-5, B(D^+_s --> K^+ e^+ e^-) < 5.2 x 10^-5, and B(D^+_s --> K^- e^+ e^+) < 1.7 x 10^-5.
description: 9 pages, available through http://www.lns.cornell.edu/public/CLNS/
Two special cases of the Dynamical Mordell-Lang Conjecture in positive characteristic
Creators: name: Nelson, Kristina
Publisher: name: University of British Columbia
Year: 2017

description: We prove the positive characteristic version of the Dynamical Mordell-Lang Conjecture in two novel cases. Let p be a prime and K a field of characteristic p>0. Let k ∈ ℕ, and let G denote the multiplicative group of K, of dimension k. Let α be an element of G, and V a variety contained in G. Let φ: G →G be a group endomorphism defined over K. We know φ(x₁,x₂,...,xk)=(x₁^a1,1 x₂^a1,2 ··· xk^a1k , ... , x₁^ak1 x₂^ak2 ··· xk^akk), for some integer exponents aij. In the case where the matrix of exponents, ( aij ) is similar to a single Jordan block, we show that the set S = { n ∈ ℕ double : φ^n(α) ∈ V } is a finite union of arithmetic progressions. When the dimension k = 3, we show S is a finite union of arithmetic progressions for any group endomorphism φ.
Memorandum from Charles Dollard to Frederick P. Keppel and Eliza Gaylord, July 24, 1940
Creators: name: Dollard, Charles, 1907-1977
Publisher: name: Columbia University
Year: 2019
Subjects: Race relations
African Americans--Social conditions
Endowments

description: Notes from meeting between Charles Dollard and Samuel A. Stouffer regarding administrative changes at the Carnegie-Myrdal Study offices and manuscript submission by researchers working on the study.
Theory and simulations on strong pinning of vortex lines by nanoparticles
Creators: name: Koshelev, Alexei E.
name: Kolton, Alejandro B.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: The pinning of vortex lines by an array of nanoparticles embedded inside superconductors has become the most efficient practical way to achieve high critical currents. In this situation pinning occurs via trapping of the vortex-line segments and the critical current is determined by the typical length of the trapped segments. To verify analytical estimates and develop a quantitative description of strong pinning, we numerically simulated isolated vortex lines driven through an array of nanoparticles. We found that the critical force grows roughly as the square root of the pin density and it is strongly suppressed by thermal noise. The configurations of pinned lines are strongly anisotropic, displacements in the drive directions are much larger than in the transverse direction. Moreover, we found that the roughening index for the longitudinal displacements exceeds one. This indicates that the local stresses in the critical region increase with the total line length and the elastic description breaks down in the thermodynamic limit. Thermal noise reduces the anisotropy of displacements in the critical regions and straightens the lines.
description: 13 pages, 11 figures, link to animation, to be published in Phys. Rev. B
Memorandum from Charles Dollard to Frederick P. Keppel and Eliza Gaylord, August 26, 1940
Creators: name: Dollard, Charles, 1907-1977
Publisher: name: Columbia University
Year: 2019
Subjects: Race relations
African Americans--Social conditions
Endowments

description: Notes from meeting between Charles Dollard and Samuel A. Stouffer to discuss the shuttering of Carnegie-Myrdal Study's New York office on August 31.
Hierarchical multi-criteria decision making with group voting information: New Tanino’s additive consistency intuitionistic fuzzy translation and utility vector acquisition
Creators: name: Wang, Zhou-Jing
name: Tong, Xiayu
Publisher: name: Taylor & Francis
Year: 2022
Subjects: subject: Space Science
subject: Ecology
subject: FOS: Biological sciences
subject: Sociology
subject: FOS: Sociology
subject: Immunology
subject: FOS: Clinical medicine
subject: Biological Sciences not elsewhere classified
subject: Information Systems not elsewhere classified
subject: Computational Biology

description: The frame of intuitionistic fuzzy preference relations (IFPRs) is an effective tool of representing pairwise preference order based group voting information. However, existing intuitionistic fuzzy translations of Tanino’s additive consistency and previous methods of acquiring utility vectors from IFPRs are often unable to achieve a satisfactory solution for hierarchical multi-criteria decision making (HMCDM) with IFPRs. This study analyzes existing notions of additively consistent IFPRs (ACIFPRs) and shows their shortages. A novel intuitionistic fuzzy translation of Tanino’s additive consistency is developed and an index computational formula is provided to measure additive inconsistency of IFPRs. A new approach is offered to generate ACIFPRs from vectors with intuitionistic fuzzy elements and a frame is put forward to normalize intuitionistic fuzzy vectors. Subsequently, a closed-form solution based method is presented to secure normalized intuitionistic fuzzy utility vectors from ACIFPRs and a linear program is built to acquire an optimal and normalized intuitionistic fuzzy utility vector from any IFPR. An approach is proposed to tackle HMCDM problems with pairwise preference order based group voting information. The reasonability and performance of the models developed are validated by an illustrative example and a case study about outstanding teacher recommendation based on large-scale group votes on teaching satisfaction.
Sp(2) Renormalization
Creators: name: Lavrov, Peter M.
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: The renormalization of general gauge theories on flat and curved space-time backgrounds is considered within the Sp(2)-covariant quantization method. We assume the existence of a gauge-invariant and diffeomorphism invariant regularization. Using the Sp(2)-covariant formalism one can show that the theory possesses gauge invariant and diffeomorphism invariant renormalizability to all orders in the loop expansion and the extended BRST symmetry after renormalization is preserved. The advantage of the Sp(2)-method compared to the standard Batalin-Vilkovisky approach is that, in reducible theories, the structure of ghosts and ghosts for ghosts and auxiliary fields is described in terms of irreducible representations of the Sp(2) group. This makes the presentation of solutions to the master equations in more simple and systematic way because they are Sp(2)- scalars.
description: Typos corrected, refs added, V3 Journal version
Open charm effects in $e^+e^-\to J/ψη$, $J/ψπ^0$ and $ϕη_c$
Creators: name: Wang, Qian
name: Liu, Xiao-Hai
name: Zhao, Qiang
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We propose to study the open charm effects in $e^+ e^-\to J/ψη$, $J/ψπ^0$ and $ϕη_c$. We show that the exclusive cross section lineshapes of these processes would be strongly affected by the open charm effects. Since the final state light meson productions are through soft gluon radiations, we assume a recognition of this soft process via charmed meson loops at hadronic level. A unique feature among these three reactions is that the $D\bar{D^*}+c.c.$ open channel is located in a relatively isolated energy, i.e. $\sim 3.876$ GeV, which is sufficiently far away from the known charmonia $ψ(3770)$ and $ψ(4040)$. Therefore, the cross section lineshapes of these reactions may provide an opportunity for singling out the open charm effects with relatively well-defined charmonium contributions. In particular, we find that reaction $e^+ e^-\to J/ψπ^0$ is sensitive to the open charm $D\bar{D^*}+c.c.$ Due to the dominance of the isospin-0 component at the charmonium energy region, we predict an enhanced model-independent cusp effect between the thresholds of $D^0\bar{D}^0+c.c.$ and $D^+ D^{*-}+c.c.$ This study can also help us to understand the X(3900) enhancement recently observed by Belle Collaboration in $e^+ e^-\to D\bar{D}+c.c.$
description: Revised version to appear in PRD; An error corrected; Slight changes to the numerical results; Conclusion intact
title: A New Heuristic Algorithm for Accuracy and Computational Efficiency for Solving Minimum Cost Flow Problems
Creators: name: Chávez, Timothy Michael
Publisher: name: Old Dominion University Libraries
Year: 2021

description: While the minimum cost flow (MCF) problems have been well documented in many publications, due to its broad applications, little or no effort has been devoted to explaining the algorithms for identifying loop formation and computing the θ value needed to solve MCF network problems. This paper proposes efficient numerical procedures and MATLAB computer implementation for computing the θ value. Furthermore, this paper also proposes a mixed heuristic, shortest path (SP) Chavez-Nguyen (or Chayen) Algorithm in Phase 1 (to obtain the basic feasible solution) and, either the conventional MCF or MATLAB’s built-in Linprog() function, in Phase 2 (to obtain the optimal final solution), for a given network problem. Several academic and real-life network problems have been solved to validate the proposed algorithms; the numerical results obtained by the new heuristic code has been compared with the built-in MATLAB Linprog() function (Simplex algorithm) and with the conventional method (where the classical MCF algorithm is applied in both Phases 1 and 2); the results of which are used to validate both the accuracy and computational (time) efficiency of the proposed mixed/hybrid algorithm.
Letter from Charles Dollard to Samuel A. Stouffer, June 13, 1940
Creators: name: Dollard, Charles, 1907-1977
Publisher: name: Columbia University
Year: 2019
Subjects: Race relations
African Americans--Social conditions
Endowments

description: Charles Dollard confirms receipt of the latest statement of expenditures from the Carnegie-Myrdal Study team, and addresses vacation pay for the study's staff.
Carnegie-Myrdal Study, Statement of Expenditures, June 1, 1939 through May 31, 1940
Creators: name: Stouffer, Samuel A., 1900-1960
name: Ward, Robertson Dwight 1905-
Publisher: name: Columbia University
Year: 2019
Subjects: Race relations
African Americans--Social conditions
Endowments

description: Statement of expenditures, with note of June 11, 1940 approval by Carnegie Corporation Treasurer R.D. Ward.
Coulomb drag between helical edge states
Creators: name: Zyuzin, Vladimir A.
name: Fiete, Gregory A.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We theoretically investigate the Coulomb drag between the edge states of two quantum spin Hall systems. Using an interacting theory of the one-dimensional helical edge modes, we show that the drag vanishes at second order in the inter-edge interaction, where it is typically finite in other systems, due to the absence of backscattering within the edges. However, in the presence of a small external magnetic field the drag is finite and scales as the fourth power of the magnetic field, a behavior that sharply distinguishes it from other systems. We obtain the temperature dependence of the drag for regimes of both linear and quadratic edge dispersion in the presence of a finite field.
description: 4 pages, 3 figures
A fresh look at eta2(1645), eta2(1870), eta2(2030) and f2(1910) in pbar-p -> eta + 3pizero
Creators: name: Anisovich, A. V.
name: Batty, C. J.
name: Bugg, D. V.
name: Nikonov, V. A.
name: Sarantsev, A. V.
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: There is a large discrepancy between results of Crystal Barrel and WA102 for the branching ratio R = BR[eta2(1870)->a2(1320)pi]/ BR[eta2(1870)->f2(1270)eta]. An extensive re-analysis of the Crystal Barrel data redetermines branching ratios for decays of eta2(1870), eta2(1645), eta2(2030) and f2(1910). This re-analysis confirms a small value for R of 1.60+-0.39, inconsistent with the value 32.6+-12.6 of WA102. The likely origin of the discrepancy is that the WA102 data contain a strong f2(1910)->a2-pi signal as well as eta2(1870). There is strong evidence that the eta2(1870) has resonant phase variation. A peak in f2(1270)a0(980) confirms closely the parameters of the a2(2255) resonance observed previously. A peak in eta2(2030)-pi is interpreted naturally in terms of pi2(2245) with reduced errors for mass and width M=2285+-20(stat)+-25(syst) MeV, Gamma=250+-20(stat)+-25(syst) MeV.
description: 25 pages, 13 figures; several major additions in final version
The Exact Superconformal R-Symmetry Extremizes Z
Creators: name: Jafferis, Daniel L.
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The three sphere partition function, Z, of three dimensional theories with four supercharges and an R-symmetry is computed using localization, resulting in a matrix integral over the Cartan of the gauge group. There is a family of couplings to the curved background, parameterized by a choice of R-charge, such that supersymmetry is preserved; Z is a function of those parameters. The magnitude of the result is shown to be extremized for the superconformal R-charge of the infrared conformal field theory, in the absence of mixing of the R-symmetry with accidental symmetries. This exactly determines the IR superconformal R-charge.
description: 25 pages, v2: references added, typos and an error in a formula corrected
Uniform vs. retailer-specific pricing: How a supplier responds to the dominant retailers’ markup pricing strategy
Creators: name: Wang, Yao-Yu
name: Tan, Yue
name: Wang, Jian-Cai
name: Lai, Fujun
Publisher: name: Taylor & Francis
Year: 2023
Subjects: subject: Neuroscience
subject: Biotechnology
subject: Ecology
subject: FOS: Biological sciences
subject: Sociology
subject: FOS: Sociology
subject: Science Policy
subject: Plant Biology
subject: Computational Biology

description: This paper investigates how dominant retailers should choose appropriate markup pricing strategies (a fixed-dollar markup, or a percentage markup), and how their supplier responds by choosing wholesale pricing strategies (a retailer-specific wholesale pricing, or a uniform wholesale pricing). Our results show that, all other things being equal, the uniform wholesale pricing strategy weakens the position of the retailers in the supply chain and thus is more favorable for the supplier. Specifically, when both retailers choose the same markup scheme, it is better for the supplier to choose the uniform wholesale pricing strategy since it can lead a higher profit for himself. The uniform wholesale pricing strategy also benefits the whole channel and the end-consumers, but hurts the dominant retailers. When the two retailers choose different markup schemes, the best choice for the supplier will still be the uniform wholesale pricing scheme if the level of downstream competition is sufficiently high; otherwise, the supplier would prefer the retailer-specific wholesale pricing scheme. The preference of the retailer using fixed-dollar markup pricing is just the opposite as compared to that of the supplier, while the retailer using percentage markup pricing always prefers retailer-specific wholesale pricing. Besides, the uniform wholesale pricing is beneficial to the whole channel. After anticipating the supplier’s reactions, both retailers are better off choosing percentage markup pricing no matter which wholesale pricing strategy the supplier chooses and what the level of competition is. Therefore, the final equilibrium would be the case where the dominant retailers choose the percentage-markup variant and the supplier always responds by adopting the uniform pricing scheme no matter what the level of bcompetition is. This equilibrium enhances the supply chain efficiency and benefits the end-consumers since it leads to the highest channel profits and the lowest retailing prices. Moreover, under this equilibrium, the supplier gets better while the retailers get worse as the level of competition increases.
Spin-Orbit Effects in Carbon-Nanotube Double Quantum Dots
Creators: name: Weiss, S.
name: Rashba, E. I.
name: Kuemmeth, F.
name: Churchill, H. O. H
name: Flensberg, K.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We study the energy spectrum of symmetric double quantum dots in narrow-gap carbon nanotubes with one and two electrostatically confined electrons in the presence of spin-orbit and Coulomb interactions. Compared to GaAs quantum dots, the spectrum exhibits a much richer structure because of the spin-orbit interaction that couples the electron's isospin to its real spin through two independent coupling constants. In a single dot, both constants combine to split the spectrum into two Kramers doublets, while the antisymmetric constant solely controls the difference in the tunneling rates of the Kramers doublets between the dots. For the two-electron regime, the detailed structure of the spin-orbit split energy spectrum is investigated as a function of detuning between the quantum dots in a 22-dimensional Hilbert space within the framework of a single-longitudinal-mode model. We find a competing effect of the tunneling and Coulomb interaction. The former favors a left-right symmetric two-particle ground state, while in the regime where the Coulomb interaction dominates over tunneling, a left-right antisymmetric ground state is found. As a result, ground states on both sides of the $(11)$-$(02)$ degeneracy point may possess opposite left-right symmetry, and the electron dynamics when tuning the system from one side of the $(11)$-$(02)$ degeneracy point to the other is controlled by three selection rules (in spin, isospin, and left-right symmetry). We discuss implications for the spin-dephasing and Pauli blockade experiments.
description: revised version, accepted for publication in Phys. Rev. B
Exact nonequilibrium steady state of a strongly driven open XXZ chain
Creators: name: Prosen, Tomaz
Publisher: name: arXiv
Year: 2011
Subjects: subject: Quantum Physics (quant-ph)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: FOS: Physical sciences

description: An exact and explicit ladder-tensor-network ansatz is presented for the non-equilibrium steady state of an anisotropic Heisenberg XXZ spin-1/2 chain which is driven far from equilibrium with a pair of Lindblad operators acting on the edges of the chain only. We show that the steady-state density operator of a finite system of size n is - apart from a normalization constant - a polynomial of degree 2n-2 in the coupling constant. Efficient computation of physical observables is faciliated in terms of a transfer operator reminiscent of a classical Markov process. In the isotropic case we find cosine spin profiles, 1/n^2 scaling of the spin current, and long-range correlations in the steady state. This is a fully nonperturbative extension of a recent result [Phys. Rev. Lett. 106, 217206 (2011)].
description: 5 REVTeX pages; minor corrections + fig.2 added, essentially equivalent to the published version
Letter from Frederick P. Keppel to Samuel A. Stouffer to June 19, 1940
Creators: name: Keppel, Frederick P. (Frederick Paul), 1875-1943
Publisher: name: Columbia University
Year: 2019
Subjects: Race relations
African Americans--Social conditions
Endowments

description: Frederick P. Keppel writes to confirm his approval of the latest statement of expenditures from the Carnegie-Myrdal Study and to express his satisfaction with Samuel A. Stouffer's work as the study's new interim director.
A statistical-mechanical explanation of dark matter halo properties
Creators: name: Kang, Dong-Biao
name: He, Ping
Publisher: name: arXiv
Year: 2010
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: Cosmological N-body simulations have revealed many empirical relationships of dark matter halos, yet the physical origin of these halo properties still remains unclear. On the other hand, the attempts to establish the statistical mechanics for self-gravitating systems have encountered many formal difficulties, and little progress has been made for about fifty years. The aim of this work is to strengthen the validity of the statistical-mechanical approach we have proposed previously to explain the dark matter halo properties. By introducing an effective pressure instead of the radial pressure to construct the specific entropy, we use the entropy principle and proceed in a similar way as previously to obtain an entropy stationary equation. An equation of state for equilibrated dark halos is derived from this entropy stationary equation, by which the dark halo density profiles with finite mass can be obtained. We also derive the anisotropy parameter and pseudo-phase-space density profile. All these predictions agree well with numerical simulations in the outer regions of dark halos. Our work provides further support to the idea that statistical mechanics for self-gravitating systems is a viable tool for investigation.
description: 5 pages, 4 figures, Accepted by A&A
Carnegie-Myrdal Study, Budget Estimate for June through August, 1940
Creators: name: Stouffer, Samuel A., 1900-1960
Publisher: name: Columbia University
Year: 2019
Subjects: Race relations
African Americans--Social conditions
Endowments

description: Budget estimate for the Carnegie-Myrdal Study attached to June 7, 1940 memorandum from Samuel A. Stouffer to Frederick P. Keppel.
Biaxially textured cobalt-doped BaFe2As2 films with high critical current density over 1 MA/cm2 on MgO-buffered metal-tape flexible substrates
Creators: name: Katase, Takayoshi
name: Hiramatsu, Hidenori
name: Matias, Vladimir
name: Sheehan, Chris
name: Ishimaru, Yoshihiro
name: Kamiya, Toshio
name: Tanabe, Keiichi
name: Hosono, Hideo
Publisher: name: arXiv
Year: 2011
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: High critical current densities (Jc) > 1 MA/cm2 were realized in cobalt-doped BaFe2As2 (BaFe2As2:Co) films on flexible metal substrates with biaxially-textured MgO base-layers fabricated by an ion-beam assisted deposition technique. The BaFe2As2:Co films showed small in-plane crystalline misorientations (delta fai BaFe2As2:Co) of ~3o regardless of doubly larger misorientaions of the MgO base-layers (delta fai MgO = 7.3o), and exhibited high self-field Jc up to 3.5 MA/cm2 at 2 K. These values are comparable to that on MgO single crystals and the highest Jc among iron pnictide superconducting tapes and wires ever reported. High in-field Jc suggests the existence of c-axis correlated vortex pinning centers.
description: Published in Appl. Phys. Lett
Corrugated single layer templates for molecules: From h-BN Nanomesh to Graphene based Quantum dot arrays
Creators: name: Ma, Haifeng
name: Thomann, Mario
name: Schmidlin, Jeanette
name: Roth, Silvan
name: Morscher, Martin
name: Greber, Thomas
Publisher: name: arXiv
Year: 2010
Subjects: subject: Atomic and Molecular Clusters (physics.atm-clus)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Functional nano-templates enable self-assembly of otherwise impossible arrangements of molecules. A particular class of such templates is that of sp2 hybridized single layers of hexagonal boron nitride or carbon (graphene) on metal supports. If the substrate and the single layer have a lattice mismatch, superstructures are formed. On substrates like rhodium or ruthenium these superstructures have unit cells with ~3 nm lattice constant. They are corrugated and contain sub-units, which behave like traps for molecules or quantum dots, which are small enough to become operational at room temperature. For graphene on Rh(111) we emphasize a new structural element of small extra hills within the corrugation landscape. For the case of molecules like water it is shown that new phases assemble on such templates, and that they can be used as "nano-laboratories" where many individual processes are studied in parallel. Furthermore, it is shown that the h-BN/Rh(111) nanomesh displays a strong scanning tunneling microscopy induced luminescence contrast within the 3 nm unit cell which is a way to address trapped molecules and/or quantum dots.
On theories of enhanced CP violation in B_s,d meson mixing
Creators: name: Trott, Michael
name: Wise, Mark B.
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The DO collaboration has measured a deviation from the standard model (SM) prediction in the like sign dimuon asymmetry in semileptonic b decay with a significance of 3.2 sigma. We discuss how minimal flavour violating (MFV) models with multiple scalar representations can lead to this deviation through tree level exchanges of new MFV scalars. We review how the two scalar doublet model can accommodate this result and discuss some of its phenomenology. Limits on electric dipole moments suggest that in this model the coupling of the charged scalar to the right handed u-type quarks is suppressed while its coupling to the d-type right handed quarks must be enhanced. We construct an extension of the MFV two scalar doublet model where this occurs naturally.
description: 10 pages, 7 figures, v3 final JHEP version
Letter from Samuel A. Stouffer to Frederick P. Keppel, June 8, 1940
Creators: name: Stouffer, Samuel A., 1900-1960
Publisher: name: Columbia University
Year: 2019
Subjects: Race relations
African Americans--Social conditions
Endowments

description: Short note attached to the Statement of Expenditures for the Carnegie-Myrdal Study for June 1, 1939 through May 31, 1940.
Charged Particle Motion in a Plasma: Electron-Ion Energy Partition
Creators: name: Brown, Lowell S.
name: Preston, Dean L.
name: Singleton, Robert L.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: A charged particle traversing a plasma loses its energy to both plasma electrons and ions. We compute the energy partition, the fractions $E_e/E_0$ and $E_\smI/E_0$ of the initial energy $E_0$ of this `impurity particle' that are deposited into the electrons and ions when it has slowed down into an equilibrium distribution that we shall determine. We use a well-defined Fokker-Planck equation for the phase space distribution of the charged impurity particles in a weakly to moderately coupled plasma. The Fokker-Planck equation holds to first sub-leading order in the dimensionless plasma coupling constant, which means we compute to order $n\ln n$ (leading) and $n$ (sub-leading) in the plasma density $n$. Previously, the order $n$ terms had been estimated, not calculated. Since the charged particle does not come to rest, the energy loss obtained by an integration of a $dE/dx$ has an ambiguity of order of the plasma temperature. Our Fokker-Planck formulation provides an unambiguous, precise definition of the energy fractions. For equal electron and ion temperatures, we find that our precise results agree well with a fit obtained by Fraley, Linnebur, Mason, and Morse. The case with differing electron and ion temperatures, a case of great importance for nuclear fusion, will be investigated in detail in the present paper. The energy partitions for this general case, partitions that have not been obtained before, will be presented. We find that now the proper solution of the Fokker-Planck equation yields a quasi-static equilibrium distribution to which fast particles relax that has neither the electron nor the ion temperature. This "schizophrenic" final ensemble of slowed particles gives a new mechanism to bring the electron and ion temperatures together. The rate at which this new mechanism brings the electrons and ions in the plasma into thermal equilibrium will be computed.
description: Improved abstract, introduction, and conclusions
Memorandum from Samuel A. Stouffer to Frederick P. Keppel, June 7, 1940
Creators: name: Stouffer, Samuel A., 1900-1960
Publisher: name: Columbia University
Year: 2019
Subjects: Race relations
African Americans--Social conditions
Endowments

description: Detailed discussion of the budget of the Carnegie-Myrdal Study up to August 31, 1940
Magnetism and domain formation in SU(3)-symmetric multi-species Fermi mixtures
Creators: name: Titvinidze, Irakli
name: Privitera, Antonio
name: Chang, Soon-Yong
name: Diehl, Sebastian
name: Baranov, Mikhail
name: Daley, Andrew
name: Hofstetter, Walter
Publisher: name: arXiv
Year: 2010
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We study the phase diagram of an SU(3)-symmetric mixture of three-component ultracold fermions with attractive interactions in an optical lattice, including the additional effect on the mixture of an effective three-body constraint induced by three-body losses. We address the properties of the system in $D \geq 2$ by using dynamical mean-field theory and variational Monte Carlo techniques. The phase diagram of the model shows a strong interplay between magnetism and superfluidity. In the absence of the three-body constraint (no losses), the system undergoes a phase transition from a color superfluid phase to a trionic phase, which shows additional particle density modulations at half-filling. Away from the particle-hole symmetric point the color superfluid phase is always spontaneously magnetized, leading to the formation of different color superfluid domains in systems where the total number of particles of each species is conserved. This can be seen as the SU(3) symmetric realization of a more general tendency to phase-separation in three-component Fermi mixtures. The three-body constraint strongly disfavors the trionic phase, stabilizing a (fully magnetized) color superfluid also at strong coupling. With increasing temperature we observe a transition to a non-magnetized SU(3) Fermi liquid phase.
description: 36 pages, 17 figures; Corrected typos
Quality control by a mobile molecular workshop: quality versus quantity
Creators: name: Sharma, Ajeet K.
name: Chowdhury, Debashish
Publisher: name: arXiv
Year: 2010
Subjects: subject: Biological Physics (physics.bio-ph)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Subcellular Processes (q-bio.SC)
subject: FOS: Physical sciences
subject: FOS: Biological sciences

description: Ribosome is a molecular machine that moves on a mRNA track while, simultaneously, polymerizing a protein using the mRNA also as the corresponding template. We define, and analytically calculate, two different measures of the efficiency of this machine. However, we arugue that its performance is evaluated better in terms of the translational fidelity and the speed with which it polymerizes a protein. We define both these quantities and calculate these analytically. Fidelity is a measure of the quality of the products while the total quantity of products synthesized in a given interval depends on the speed of polymerization. We show that for synthesizing a large quantity of proteins, it is not necessary to sacrifice the quality. We also explore the effects of the quality control mechanism on the strength of mechano-chemical coupling. We suggest experiments for testing some of the ideas presented here.
description: Final version published in Physical Review E
Model independence in two dimensions and polarized cold dipolar molecules
Creators: name: Volosniev, A. G.
name: Fedorov, D. V.
name: Jensen, A. S.
name: Zinner, N. T.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Quantum Physics (quant-ph)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Quantum Gases (cond-mat.quant-gas)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: We calculate the energy and wave functions of two particles confined to two spatial dimensions interacting via arbitrary anisotropic potentials with negative or zero net volume. The general rigorous analytic expressions are given in the weak coupling limit where universality or model independence are approached. The monopole part of anisotropic potentials is crucial in the universal limit. We illustrate the universality with a system of two arbitrarily polarized cold dipolar molecules in a bilayer. We discuss the transition to universality as function of polarization and binding energy, and compare analytic and numerical results obtained by the stochastic variational method. The universal limit is essentially reached for experimentally accessible strengths.
description: 4.1 pages, 3 figures, published version
Inducing odd-frequency triplet superconducting correlations in a normal metal
Creators: name: Cottet, Audrey
Publisher: name: arXiv
Year: 2011
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: This work discusses theoretically the interplay between the superconducting and ferromagnetic proximity effects, in a diffusive normal metal strip in contact with a superconductor and a non-uniformly magnetized ferromagnetic insulator. The quasiparticle density of states of the normal metal shows clear qualitative signatures of triplet correlations with spin one (TCS1). When one goes away from the superconduting contact, TCS1 focus at zero energy under the form of a peak surrounded by dips, which show a typical spatial scaling behavior. This behavior can coexist with a focusing of singlet correlations and triplet correlations with spin zero at finite but subgap energies. The simultaneous observation of both effects would enable an unambigous characterization of TCS1.
description: To appear in Physical Review Letters
Nematic order by elastic interactions and cellular rigidity sensing
Creators: name: Friedrich, Benjamin M.
name: Safran, Samuel A.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Biological Physics (physics.bio-ph)
subject: FOS: Physical sciences

description: We predict spontaneous nematic order in an ensemble of active force generators with elastic interactions as a minimal model for early nematic alignment of short stress fibers in non-motile, adhered cells. Mean-field theory is formally equivalent to Maier-Saupe theory for a nematic liquid. However, the elastic interactions are long-ranged (and thus depend on cell shape and matrix elasticity) and originate in cell activity. Depending on the density of force generators, we find two regimes of cellular rigidity sensing for which orientational, nematic order of stress fibers depends on matrix rigidity either in a step-like manner or with a maximum at an optimal rigidity.
description: 12 pages, 4 figures