36 Result(s)
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Article
Comparative Analysis of Diagonal and Centrifugal Compressors with Synergy Theory in Compressed Air Energy Storage System
Energy storage technology is an essential part of the efficient energy system. Compressed air energy storage (CAES) is considered to be one of the most promising large-scale physical energy storage technologie...
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Open AccessInscribing geodesic circles on the face of the superstratum
We use families of circular null geodesics as probes of a family of microstate geometries, known as (1, 0, n) superstrata. These geometries carry a left-moving momentum wave and the behavior of some of the geodes...
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Design Strategy of Diagonal Compressors in Compressed Air Energy Storage System
As a kind of large-scale physical energy storage, compressed air energy storage (CAES) plays an important role in the construction of more efficient energy system based on renewable energy in the future. Compa...
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Open AccessTensionless strings on AdS3 orbifolds
The bound state of one NS5 brane (wrapped on a 𝕋4) and N NS1-branes has two dual descriptions: its low-energy dynamics is described by the symmetric orbifold of 𝕋4, while the near horizon geometry is captured by ...
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Article
Open AccessBootstrap** the effect of the twist operator in the D1D5 CFT
In the D1D5 CFT the twist operator of order 2 can twist together two copies in the untwisted sector into a single joined copy in the twisted sector. Traditionally, this effect is computed by using the covering...
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Open AccessPartial spectral flow in the D1D5 CFT
The two-dimensional 𝒩 = 4 superconformal algebra has a free field realization with four bosons and four fermions. There is an automorphism of the algebra called spectral flow. Under spectral flow, the four fer...
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Open AccessThe dual of a tidal force in the D1D5 CFT
It was demonstrated that a string probe falling radially within a superstratum geometry would experience tidal forces. These tidal forces were shown to excite the string by converting its kinetic energy into s...
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Open AccessA freely falling graviton in the D1D5 CFT
We study a freely falling graviton propagating in AdS in the context of the D1D5 CFT, where we introduce an interaction by turning on a deformation operator. We start with one left and right moving boson in th...
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Open AccessBootstrap** the effect of the twist operator in symmetric orbifold CFTs
We study the 2D symmetric orbifold CFT of two copies of free bosons. The twist operator can join the two separated copies in the untwisted sector into a joined copy in the twisted sector. Starting with a state...
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Open AccessDynamical evolution in the D1D5 CFT
It is interesting to ask: how does the radial space direction emerge from the CFT in gauge-gravity duality? In this context we resolve a long-standing puzzle with the gravity duals of two classes of states in ...
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Article
Structural, magnetic and magnetocaloric properties in La0.67(Sr1−xMgx)0.33MnO3 (x = 0, 0.1, 0.3) compounds
The La0.67(Sr1−xMgx)0.33MnO3 (x = 0, 0.1, 0.3) manganites have been prepared by sol–gel method, and the effect of Mg do** on their structure, magnetic and magnetocaloric properties has been researched. All the ...
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Article
Open AccessUniversal lifting in the D1-D5 CFT
We consider D1-D5-P states in the untwisted sector of the D1-D5 orbifold CFT where one copy of the seed CFT has been excited with a left-moving superconformal primary. Despite being BPS at the orbifold point, ...
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Article
Applications of Additively Manufactured Adjustable Vaned Diffusers in Centrifugal Compressor
As a variable-condition adjustment technology, the adjustable vaned diffusers (AVDs) can expand the working flow range of the compressor in the compressed air energy storage (CAES) system and improve its aerod...
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Article
Removal mechanisms of nanosecond pulsed laser cleaning of blue and red polyurethane paint
In this study, laser cleaning of blue and red polyurethane paint on aluminum alloy surface were investigated by using a nanosecond pulsed laser at 1.8, 3.2 and 8.0 J/cm2. The surface topography after laser cleani...
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Article
Oxygen defect related high temperature dielectric relaxation behavior in (Ba,La)(Zr,Sn,Ti)O3 ceramics
Ferroelectric materials with the typical perovskite structure are widely used in capacitors, ultrasonic devices, oil drilling, transducers, and other fields. Lead-lanthanum-zirconium-titanate ceramics co-doped...
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Open AccessLifting at higher levels in the D1D5 CFT
The D1D5P system has a large set of BPS states at its orbifold point. Perturbing away from this ‘free’ point leads to some states joining up into long supermultiplets and lifting, while other states remain BPS...
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Article
Two Families of Entanglement-Assisted Quantum MDS Codes from Constacyclic Codes
Entanglement-assisted quantum error correcting codes (EAQECCs) can be derived from arbitrary classical linear codes. However, it is a very difficult task to determine the number of entangled states required. I...
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Open AccessLifting of level-1 states in the D1D5 CFT
The D1D5 CFT has a large set of states that are supersymmetric at the ‘free’ orbifold point in moduli space. When we perturb away from this point, some of these states join into long multiplets and lift in ene...
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Open AccessLifting of states in 2-dimensional N = 4 supersymmetric CFTs
We consider states of the D1-D5 CFT where only the left-moving sector is excited. As we deform away from the orbifold point, some of these states will remain BPS while others can ‘lift’. The lifting can be com...
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Article
Phase Diagram and Magnetocaloric Effect of Mn2Tb-Fe2Tb System
Mn2Tb-Fe2Tb phase diagram was drawn, and the crystal structure and magnetocaloric effect of (Mn1-xFex)2Tb (x ≤ 0.5) compounds at the Mn-rich side were systematically studied. X-ray diffraction demonstrates that a...
