340 research outputs found
Supporting Data for Laser ablated sub-wavelength structure anti-reflection coating on an alumina lens
No full textThe images are VK4 files generated by a Keyence VKX-3000 confocal microscope. The code "Pyramid stacking.py" is a custom code written by Calvin Firth with which the images were analyzed.These are images and the code that were used to analyze the data provided for the paper "Laser ablated subwavelength structure antireflection coating on an alumina lens."Hanany, Shaul; Cray, Scott; Dietterich, Samuel; Dusing, Jan; Firth, Calvin; Koch, Jurgen; Lam, Rex; Matsumura, Tomotake; Sakurai, Haruyuki; Sakurai, Yuki; Suzuki, Aritoki; Takaku, Ryota; Wen, Qi; Wienke, Alexander; Yan, Yan. (2025). Supporting Data for Laser ablated sub-wavelength structure anti-reflection coating on an alumina lens. Retrieved from the Data Repository for the University of Minnesota (DRUM), https://doi.org/10.13020/X07S-DD66
An Infinite Family of Superconformal Quiver Gauge Theories with Sasaki-Einstein Duals
No full textWe describe an infinite family of quiver gauge theories that are AdS/CFT dual to a corresponding class of explicit horizon Sasaki-Einstein manifolds. The quivers may be obtained from a family of orbifold theories by a simple iterative procedure. A key aspect in their construction relies on the global symmetry which is dual to the isometry of the manifolds. For an arbitrary such quiver we compute the exact R-charges of the fields in the IR by applying a-maximization. The values we obtain are generically quadratic irrational numbers and agree perfectly with the central charges and baryon charges computed from the family of metrics using the AdS/CFT correspondence. These results open the way for a systematic study of the quiver gauge theories and their dual geometries
PMC Turbo image and lidar data taken in July 2018, supplement to Geach et al. (2020) "Gravity Wave and Vortex Ring Formation Observed by PMC Turbo"
No full textData consist of image data ("Geach_ds01.nc"), lidar data("Geach_ds02.nc"), and NAVGEM reanalysis output ("Geach_ds03.nc").
Image and lidar data were taken aboard the PMC Turbo instrument described in Fritts et al. (2019) "PMC Turbo: Studying Gravity Wave and Instability Dynamics in the Summer Mesosphere Using Polar Mesospheric Cloud Imaging and Profiling From a Stratospheric Balloon". Images contain metadata: balloon location, altitude, and pointing, and image exposure time.
NAVGEM reanalysis model is described in Eckermann et al. (2018) "High-Altitude (0–100 km) Global Atmospheric Reanalysis System: Description and Application to the 2014 Austral Winter of the Deep Propagating Gravity Wave Experiment (DEEPWAVE)". Data consists of vertical profiles from 50-100 km of meridional winds, zonal winds, temperatures and buoyancy frequency.These datasets are published in accordance with AGU requirements for journal submission.NASA: 80NSSC18K0050Geach, Christopher P; Hanany, S; Fritts, D C; Kaifler, B; Kaifler, N; Kjellstrand, C B; Williams, B P; Eckermann, S D; Miller, A D; Jones, G; Reimuller, J. (2020). PMC Turbo image and lidar data taken in July 2018, supplement to Geach et al. (2020) "Gravity Wave and Vortex Ring Formation Observed by PMC Turbo". Retrieved from the University Digital Conservancy, https://doi.org/10.13020/te3n-hj23
Supplementary data for "The PMC Turbo balloon mission to measure gravity waves and turbulence in Polar Mesospheric Clouds: Camera, telemetry, and software performance"
No full textThere are three separate files containing images from PMC Turbo cameras during its flight in July 2018. Image data were taken aboard the PMC Turbo instrument described in Fritts et al. (2019) "PMC Turbo: Studying Gravity Wave and Instability Dynamics in the Summer Mesosphere Using Polar Mesospheric Cloud Imaging and Profiling From a Stratospheric Balloon," https://doi.org/10.1029/2019JD030298.The Polar Mesospheric Cloud Turbulence (PMC Turbo) instrument consists of a balloon-borne platform which hosts seven cameras and a Rayleigh lidar. During a six-day flight in July 2018, the cameras captured images of Polar Mesospheric Clouds (PMCs) with a sensitivity to spatial scales from ~20 m to 100 km at a ~2-s cadence and a full field of view (FOV) of hundreds of kilometers. We developed software optimized for imaging of PMCs, controlling multiple independent cameras, compressing and storing images, and for choosing telemetry communication channels. We give an overview of the PMC Turbo design focusing on the flight software and telemetry functions. We describe the performance of the system during its first flight in July 2018. The images uploaded here support the paper in demonstrating the performance of the PMC Turbo instrument.NASA 80NSSC18K0050NASA 80NSSC20K0178Kjellstrand, Carl B; Jones, Glenn; Geach, Christopher P; Williams, Bifford P; Fritts, David C; Miller, Amber D; Hanany, Shaul; Limon, Michele; Reimuller, Jason. (2020). Supplementary data for "The PMC Turbo balloon mission to measure gravity waves and turbulence in Polar Mesospheric Clouds: Camera, telemetry, and software performance". Retrieved from the University Digital Conservancy, https://doi.org/10.13020/df2m-a470
Counting BPS Operators in Gauge Theories: Quivers, Syzygies and Plethystics
No full textWe develop a systematic and efficient method of counting single-trace and multi-trace BPS operators with two supercharges, for world-volume gauge theories of D-brane probes for both and finite . The techniques are applicable to generic singularities, orbifold, toric, non-toric, complete intersections, et cetera, even to geometries whose precise field theory duals are not yet known. The so-called ``Plethystic Exponential'' provides a simple bridge between (1) the defining equation of the Calabi-Yau, (2) the generating function of single-trace BPS operators and (3) the generating function of multi-trace operators. Mathematically, fascinating and intricate inter-relations between gauge theory, algebraic geometry, combinatorics and number theory exhibit themselves in the form of plethystics and syzygies
On algebraic singularities, finite graphs and D-brane gauge theories : a string theoretic perspective -- with a digression on string field theory
No full textThesis (Ph.D.)--Massachusetts Institute of Technology, Dept. of Physics, 2002.Includes bibliographical references (p. 601-634).In this thesis we shall address certain beautiful inter-relations between the construction of 4-dimensional supersymmetric gauge theories and resolution of algebraic singularities, from the perspective of String Theory. We review in detail the requisite background in both the mathematics, such as orbifolds, symplectic quotients and quiver representations, as well as the physics, such as gauged linear sigma models, geometrical engineering, Hanany-Witten setups and D-brane probes. We present the work of the author in the past 4 years at the Centre for Theoretical Physics, on aspects of the world-volume gauge dynamics using D-brane resolutions of various Calabi-Yau singularities, notably Gorenstein quotients and toric singularities. Attention will be paid to the general methodology of contructing gauge theories for these singular backgrounds, with and without the presence of the NS-NS B-field, as well as the T-duals to brane setups and branes wrapping cycles in the mirror geometry. Applications of such diverse and elegant mathematics as crepant resolution of algebraic singularities, representation of finite groups and finite graphs, modular invariants of affine Lie algebras, etc. will naturally arise. Various viewpoints and generalisations of McKay's Correspondence will also be considered. As a final digression, the author's work in Witten's cubic bosonic open string field theory, will also be included.by Yahg-Hui He.Ph.D
Mass-deformed brane tilings
No full textWe study renormalization group flows among N = 1 SCFTs realized on the worldvolume of D3-branes probing toric Calabi-Yau singularities, thus admitting a brane tiling description. The flows are triggered by masses for adjoint or vector-like pairs of bifundamentals and are generalizations of the Klebanov-Witten construction of the N = theory for the conifold starting from the N = 2 theory for the C-2/Z(2) orbifold. In order to preserve the toric condition pairs of masses with opposite signs have to be switched on. We offer a geometric interpretation of the flows as complex deformations of the Calabi-Yau singularity preserving the toric condition. For orbifolds, we support this interpretation by an explicit string amplitude computation of the gauge invariant mass terms generated by imaginary self-dual 3-form fluxes in the twisted sector. In agreement with the holographic a-theorem, the volume of the Sasaki-Einstein 5-base of the Calabi-Yau cone always increases along the flow
Argyres-Douglas theories and S-duality
No full textThis article is distributed under the terms of the Creative Commons
Attribution License (CC-BY 4.0), which permits any use, distribution and reproduction in any medium, provided the original author(s) and source are creditedM.B. and T.N. are partly supported by the U.S. Department of Energy under grants DOE-SC0010008, DOE-ARRA-SC0003883, and DOE-DE-SC0007897.
This research was supported in part by the National Science Foundation under Grant No.
NSF PHY11-25915. S.G. is partially supported by the ERC Advanced Grant “SyDuGraM”,
by FNRS-Belgium (convention FRFC PDR T.1025.14 and convention IISN 4.4514.08) and by the “Communaut´e Francaise de Belgique” through the ARC progra
From the time-ordered data to the Maximum-Likelihood temperature maps of the Cosmic Microwave Backgorund anisotropy
No full textWe review selected methods of the Cosmic Microwave Background data analysis appropriate for the analysis of the largest currently available data sets. We focus on techniques of the time-ordered data manipulation and map making algorithms based on the maximum-likelihood approach. The presented methods have been applied to the MAXIMA data analysis (Hanany et al 2000) and the description of the algorithms is illustrated with the examples drawn from that experience. The more extensive presentation of the here-mentioned issues will be given in the forthcoming paper (Stompor et al 2001)
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