A class of tensor models were recently outlined as potentially calculable examples holography: their perturbative large-N behavior is similar to the Sachdev-Ye-Kitaev (SYK) model, but they are fully quantum mechanical (in sense that there no quenched disorder averaging). These facts make them intriguing tentative for black holes. In this note, we explicitly diagonalize simplest non-trivial Gurau-Witten model and study its spectral late-time properties. We find parallels (a single sample of)...

We further explore the connection between holographic O(n) tensor models and random matrices. First, we consider simplest non-trivial uncolored model show that results for density of states, level spacing spectral form factor are qualitatively identical to colored case studied in arXiv:1612.06330. also explain an overall 16-fold degeneracy by identifying various symmetries, some which were unavailable SYK models. Secondly, perhaps more interestingly, systematically identify Spectral Mirror...

We study the high temperature transport behavior of Aubry-Andr\'e-Harper (AAH) model, both in isolated thermodynamic limit and open system. At critical point AAH we find hints super-diffusive from scaling spread an initially localized wavepacket. On other hand, when connected to two baths with different chemical potentials at ends, that shows clear sub-diffusive current system size. provide explanation this by showing system-size is entirely governed single particle eigenfunctions boundary...

A binary aqueous suspension of large (L) and small (S) nearly-hard-sphere colloidal polystyrene spheres is shown to segregate spontaneously into L-rich S-rich regions for suitable choices volume fraction size ratio. This the first observation such purely entropic phase separation chemically identical species in which at least one component remains fluid. Simple theoretical arguments are presented make this effect plausible.

We demonstrate that square two-dimensional grating templates can drive the growth of three-dimensional, face-centered-cubic (fcc) colloidal crystals by convective assembly. The symmetry [i.e., (100) planes parallel to substrate] underlying template was transferred crystal and maintained throughout its ∼50 layers. characterized grown on flat templated substrates using electron microscopy small-angle x-ray scattering (SAXS). SAXS measurements samples clearly show fourfold diffraction patterns...

We study the effect of a missing spin in one dimensional $S=1/2$ antiferromagnet with nearest neighbour Heisenberg exchange $J$ and six-spin coupling $Q=4qJ$ using Quantum Monte-Carlo (QMC) bosonization techniques. For $q< q_c \approx 0.04$, system is quasi-long range ordered power-law antiferromagnetic phase, which gives way to valence-bond solid state that spontaneously breaks lattice translation symmetry for $q> q_c$. ground texture $\Phi(r) = <G_{\uparrow}|S^z(r)|G_{\uparrow}>$...

We exhibit an exactly solvable example of a SU(2) symmetric Majorana spin liquid phase, in which quenched disorder leads to random-singlet phenomenology. More precisely, we argue that strong-disorder fixed point controls the low temperature susceptibility $\chi(T)$ $S=1/2$ model on decorated honeycomb lattice with bond and/or vacancies, leading $\chi(T) = {\mathcal C}/T+ D} T^{\alpha(T) - 1}$ where $\alpha(T) \rightarrow 0$ as $T 0$. The first term is Curie tail represents emergent response...

We demonstrate that a nonzero concentration n_{v} of static, randomly placed vacancies in graphene leads to density w zero-energy quasiparticle states at the band center ε=0 within tight-binding description with nearest-neighbor hopping t on honeycomb lattice. show remains generically compensated case (exactly equal number two sublattices) even presence disorder and depends sensitively correlations between vacancy positions. For low, but not-too-low, |ε|/t this case, we ρ(ε) exhibits strong...

We present variational estimates for the low-lying energies of a simple matrix model that approximates SU(3) Yang–Mills theory on three-sphere radius R. By fixing ground state energy, we obtain (integrated) renormalization group (RG) equation coupling g as function This RG allows to estimate mass other glueball states, which find be in excellent agreement with lattice simulations.

Brownian Dynamics simulations on binary charged colloids have been performed to get a liquid crystal (at volume fraction ϕ = 0.2) or glass (ϕ 0.3) as the temperature is lowered. The subdiffusive and staircase behaviours of mean-squared displacements well behaviour van-Hove self-correlation functions for supercooled with 0.3 indicate strongly cooperative particle motion. distinct correlations follow factorization property predicted by mode-coupling theory. Most interestingly, few particles...

We use projector Quantum Monte-Carlo methods to study the $S_{\rm tot}=1/2$ doublet ground states of two dimensional $S=1/2$ antiferromagnets on a $L \times L$ square lattice with an odd number sites $N_{\rm tot}=L^2$. compute state spin texture $\Phi^z(\vec{r}) = <S^z(\vec{r})>_{\uparrow}$ in $|G>_{\uparrow}$, $S^z_{\rm component this doublet, and investigate relationship between $n^z$, thermodynamic limit staggered texture, $m$, magnitude magnetization vector same system singlet that...

We study localisation transition in a class of quasi-periodic systems that has two competing periodic scales. show such re-entrant where the energy scale is set by periodicities these Furthermore we dynamical properties systems, exhibits various kinds critical dynamics including sub-diffusive, super-diffusive and diffusive spread an initially localised wave-packet. Finally characteristics with scales can be realised within regime current experiments.

Views Icon Article contents Figures & tables Video Audio Supplementary Data Peer Review Share Twitter Facebook Reddit LinkedIn Tools Reprints and Permissions Cite Search Site Citation Sunil Singh Chouhan, Gitanjali Pagare, Pooja Soni, S. P. Sanyal; High Pressure Phase Transition Elastic Properties of Lutetium Monopnictides. AIP Conference Proceedings 15 July 2011; 1349 (1): 97–98. https://doi.org/10.1063/1.3605755 Download citation file: Ris (Zotero) Reference Manager EasyBib Bookends...

We study the uniform time reversal invariant $U(1)$ quantum spin liquid (QSL) with low energy fermionic quasi-particles for rare earth pyrochlore magnets and explore its magnetic instability employing an augmented parton mean field theory approach. Self consistent calculations stabilise QSL both gapped gapless excitations as well fractionalised magnetically ordered phases in experimentally relevant part of phase diagram near classical boundaries phases. The has a band-structure non-zero...

Spectroscopic properties of new aluminum oxide crystals for volumetric optical data storage were investigated. Magnesium impurity and double oxygen vacancy defects are responsible the main material.

We study a model of hole-doped collinear Ising antiferromagnet on the honeycomb lattice as route toward realization subsystem symmetry. find nearly exact conservation dipole symmetry verified both numerically with diagonalization finite clusters and analytically perturbation theory. The emergent forbids motion single holes—or fractons—but allows hole pairs—or dipoles—to move freely along one-dimensional line, antiferromagnetic direction, system; in transverse direction fractons dipoles are...

We have studied the crystal properties and phase stability of Actinide mono-nitride AnN (An=Np, Cm) under high pressure by using inter-ionic potential theory with modified ionic charge due to Coulomb screening effect. This actinide has been found undergo NaCl (B1) CsCl (B2) type structural transition at like other binary systems. predict such transformation in NpN CmN a 78 GPa 51 respectively. also discussed thermal elastic these compounds.