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Novel Octa-Structure Metamaterial Architecture for High Q-Factor and High Sensitivity in THz Impedance Spectroscopy.
Adv Sci (Weinh)
December 2024
Department of Photonics and Electro-Optics Engineering, School of Electrical and Computer Engineering, Ben-Gurion University of the Negev, Beer Sheva, 84105, Israel.
Terahertz (THz) electric inductive-capacitive (ELC) resonant metamaterials (MMs) are well established tools that can be used to detect the presence of dielectric material (e.g., nanoparticles, bioparticles, etc.
View Article and Find Full Text PDFCoulomb Branch Amplitudes from a Deformed Amplituhedron Geometry.
Phys Rev Lett
May 2024
Center for Quantum Mathematics and Physics (QMAP), Department of Physics, University of California, Davis, California 95616, USA and Institute for Particle and Nuclear Physics, Charles University in Prague, Prague, Czech Republic.
The amplituhedron provides, via geometric means, the all-loop integrand of scattering amplitudes in maximally supersymmetric Yang-Mills theory. Unfortunately, dimensional regularization, used conventionally for integration, breaks the beautiful geometric picture. This motivates us to propose a "deformed" amplituhedron.
View Article and Find Full Text PDFSupersymmetric Wormholes in String Theory.
Phys Rev Lett
April 2024
Science Institute, University of Iceland, Dunhaga 3, 107 Reykjavík, Iceland.
We construct a large family of Euclidean supersymmetric wormhole solutions of type IIB supergravity which are asymptotically AdS_{5}×S^{5}. The solutions are constructed using consistent truncation to maximally gauged supergravity in five dimensions which is further truncated to a four scalar model. Within this model we perform a full analytic classification of supersymmetric domain wall solutions with flat Euclidean domain wall slices.
View Article and Find Full Text PDFIntensity statistics inside an open wave-chaotic cavity with broken time-reversal invariance.
Phys Rev E
October 2023
Moscow Institute of Physics and Technology, Dolgoprudny, Russia and L. D. Landau Institute for Theoretical Physics, 142432 Chernogolovka, Russia.
Using the supersymmetric method of random matrix theory within the Heidelberg approach framework we provide statistical description of stationary intensity sampled in locations inside an open wave-chaotic cavity, assuming that the time-reversal invariance inside the cavity is fully broken. In particular, we show that when incoming waves are fed via a finite number M of open channels the probability density P(I) for the single-point intensity I decays as a power law for large intensities: P(I)∼I^{-(M+2)}, provided there is no internal losses. This behavior is in marked difference with the Rayleigh law P(I)∼exp(-I/I[over ¯]), which turns out to be valid only in the limit M→∞.
View Article and Find Full Text PDFConsistent Kaluza-Klein Truncations and Two-Dimensional Gauged Supergravity.
Phys Rev Lett
November 2022
Max Planck Institute for Gravitational Physics (Albert Einstein Institute), Am Mühlenberg 1, 14476 Potsdam, Germany.
We consider generalized Scherk-Schwarz reductions of E_{9} exceptional field theory to D=2 space-time dimensions and, in particular, construct the resulting scalar potential of all gauged supergravities that can be obtained in this way. This provides the first general expression for a multitude of theories with an interesting structure of vacua, covering potentially many new AdS_{2} cases. As an application, we prove the consistency of the truncation of eleven-dimensional supergravity on S^{8}×S^{1} to SO(9) gauged maximal supergravity.
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