Castro-Alvaredo, Olalla A. Lencsés, Máté Szécsényi, István M. Viti, Jacopo

We study the dynamics of entanglement in the scaling limit of the Ising spin chain in the presence of both a longitudinal and a transverse field. We present analytical results for the quench of the longitudinal field in critical transverse field which go beyond current lattice integrability techniques. We test these results against a numerical simu...

Straka, Ivo Grygar, Jan Hloušek, Josef Ježek, Miroslav

This work presents stochastic approaches to modeling the counting behavior of single-photon avalanche diodes (SPADs). We present both analytical expressions and simulation algorithms predicting the distribution of the number of detections in a finite time window. We also present formulas for the mean detection rate. The approaches cover recovery ti...

Zaborowski, M. Słowiński, M. Stankiewicz, K. Thibault, F. Cygan, A. Jóźwiak, H. Kowzan, G. Masłowski, P. Nishiyama, A. Stolarczyk, N.
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We report the most accurate measurement of the position of the weak quadrupole S(2) 2-0 line in D$_2$. The spectra were collected with a frequency-stabilized cavity ring-down spectrometer (FS-CRDS) with an ultra-high finesse optical cavity ($\mathcal{F}$ = 637 000) and operating in the frequency-agile, rapid scanning spectroscopy (FARS) mode. Despi...

Białończyk, Michał Damski, Bogdan

We show that the symmetry-breaking gap of the quantum Ising model in the transverse field can be extracted from free evolution of the longitudinal magnetization taking place after a gradual quench of the magnetic field. We perform for this purpose numerical simulations of the Ising chains with either periodic or open boundaries. We also study the c...

Sauls, J.A. Chamel, N. Alpar, M.A.

Nonequilibrium conditions imposed by neutrino cooling through the liquid-solid transition lead to disorder in the solid crust of neutron stars. Disorder reduces the superfluid fraction, $\rho_s/\rho$, at densities above that of neutron drip, $\rho_d \approx 4\times 10^{11}\,g/cm^3$. For an amorphous solid crust the suppression of $\rho_s$ is small,...

Shen, Jiayu Luo, Di Highman, Michael Clark, Bryan K. DeMarco, Brian El-Khadra, Aida X. Gadway, Bryce

We study the promising idea of using dipolar molecular systems as analog quantum simulators for quantum link models, which are discrete versions of lattice gauge theories. In a quantum link model the link variables have a finite number of degrees of freedom and discrete values. We construct the effective Hamiltonian of a system of dipolar molecules...

Takahashi, Jun Sandvik, Anders W.

We introduce a quantum spin-1/2 model with many-body correlated Heisenberg-type interactions on the 2D square lattice, designed to host a plaquette valence-bond solid (PVBS) ground state breaking $\mathbb{Z}_4$ symmetry. We carry out a detailed quantum Monte Carlo study of the quantum phase transition between the antiferromagnetic (AFM) and PVBS st...

Saxena, A. Kevrekidis, P.G. Cuevas-Maraver, J.

The interplay of nonlinearity and topology results in many novel and emergent properties across a number of physical systems such as chiral magnets, nematic liquid crystals, Bose-Einstein condensates, photonics, high energy physics, etc. It also results in a wide variety of topological defects such as solitons, vortices, skyrmions, merons, hopfions...

Liu, Jian Chen, Lei He, Fei Zhu, Ka-Di

Here we propose a new gravitational waves(GWs) detector in broad frequency band, which is operated at exceptional points(EPs) in micro cavities. The detected signal is an eigenfrequency split of the mechanical modes caused by the spatial strain. Due to the complex square root topology near the EP, the splitting is greatly enhanced for sufficiently ...

Gorbachenko, Oleksandr Kun, Sergiy

Mass-angle correlation of fission fragments has been understood as manifestation of quasifission. We show that this is not so: the effect can originate from correlation between fusion-fission amplitudes with different total spins signifying matter-wave interference in compound nucleus processes. This resolves the well-known puzzle with the mass-ang...