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Cellular tissue behavior is a multiscale problem. At the cell level, out of equilibrium, biochemical reactions drive physical cell-cell interactions in a typical active matter process. Cell modeling computer simulations are a robust tool to…

Soft Condensed Matter · Physics 2021-02-09 Emanuel F. Teixeira , Heitor C. M. Fernandes , Leonardo G. Brunnet

We investigate the behavior of a quantum resonator coupled to a superconducting single-electron transistor tuned to the Josephson quasiparticle resonance and show that the dynamics is similar in many ways to that found in a micromaser.…

Mesoscale and Nanoscale Physics · Physics 2013-05-29 D. A. Rodrigues , J. Imbers , A. D. Armour

We theoretically analyze the effect of parameter fluctuations on the superradiance phase transition in a setup where a large number of superconducting qubits are coupled to a single cavity. We include parameter fluctuations that are typical…

Quantum Physics · Physics 2017-05-16 S. Ashhab , K. Semba

The phase separation instability occurring with increasing nearest-neighbor repulsion V in a two-band Hubbard model (CuO chain) is discussed. Quantum Monte Carlo simulations indicate that this transition is associated with a level-crossing…

Condensed Matter · Physics 2009-10-28 A. W. Sandvik , A. Sudbo

Hybrid models of chemotaxis combine agent-based models of cells with partial differential equation models of extracellular chemical signals. In this paper, travelling wave properties of hybrid models of bacterial chemotaxis are…

Biological Physics · Physics 2013-02-13 Benjamin Franz , Chuan Xue , Kevin J. Painter , Radek Erban

The study of complex systems is often based on computationally intensive, high-fidelity, simulations. To build confidence in the prediction accuracy of such simulations, the impact of uncertainties in model inputs on the quantities of…

Computational Physics · Physics 2018-01-19 Lluis Jofre , Gianluca Geraci , Hillary Fairbanks , Alireza Doostan , Gianluca Iaccarino

Employing the time-dependent approach, we investigate a quantum tunneling decay of many-particle systems. We apply it to a one-dimensional three-body problem with a heavy core nucleus and two valence protons. We calculate the decay width…

Nuclear Theory · Physics 2015-06-05 Takahito Maruyama , Tomohiro Oishi , Kouichi Hagino , Hiroyuki Sagawa

In order to study the viscoelastic properties of certain complex fluids which are described in terms of a multiconnected transient network we have developed a convenient model system composed of microemulsion droplets linked by telechelic…

Soft Condensed Matter · Physics 2007-05-23 Mohammed Filali , Mohamed J. Ouazzani , Erir Michel , Raymond Aznar , Gregoire Porte , Jacqueline Appell

A microscopic model is constructed which is able to describe multiple magnetic flux transitions as observed in recent ultra-low temperature tunnel experiments on an aluminum superconducting ring with normal metal - insulator -…

Superconductivity · Physics 2009-11-11 D. Y. Vodolazov , F. M. Peeters , T. T. Hongisto , A. Yu. Arutyunov

Optomechanics with semi-transparent membrane multi-oscillators in a high-finesse cavity is an established solution for designing the dispersive interaction, and reaching many achievements, such as the study of non-linear dynamics, heat…

This paper reports on comprehensive efforts on uncertainty quantification and global sensitivity analysis for accelerator cavity design. As a case study object the TESLA shaped superconducting cavities, as produced for the European X-ray…

This paper develops a quasispecies model where cells can adopt a two-cell survival strategy. Within this strategy, pairs of cells join together, at which point one of the cells sacrifices its own replicative ability for the sake of the…

Populations and Evolution · Quantitative Biology 2009-11-11 Emmanuel Tannenbaum

In this paper we study phase transitions for weakly interacting multiagent systems. By investigating the linear response of a system composed of a finite number of agents, we are able to probe the emergence in the thermodynamic limit of a…

Statistical Mechanics · Physics 2021-06-08 Niccolo Zagli , Valerio Lucarini , Grigorios. A. Pavliotis

A multi-type neutral Cannings population model with mutation and fixed subpopulation sizes is analyzed. Under appropriate conditions, as all subpopulation sizes tend to infinity, the ancestral process, properly time-scaled, converges to a…

Probability · Mathematics 2023-04-13 Martin Möhle

Parasitic two-level tunneling systems (TLS) emerge in amorphous dielectrics and constitute a serious nuisance for various microfabricated devices, where they act as a source of noise and decoherence. Here, we demonstrate a new test bed for…

Superconductivity · Physics 2017-09-19 Jan David Brehm , Alexander Bilmes , Georg Weiss , Alexey V. Ustinov , Jürgen Lisenfeld

Quantum amplifier is an essential device in quantum information processing. As in the classical (non-quantum) case, its characteristic uncertainty needs to be suppressed by feedback, and in fact such a control theory for a single quantum…

Quantum Physics · Physics 2018-09-05 Yu Yokotera , Naoki Yamamoto

We address the problem of two interacting atoms of different species inside a cavity and find the explicit solutions of the corresponding eigenvalues and eigenfunctions using a new invariant. This model encompasses various commonly used…

Quantum Physics · Physics 2010-04-26 J. M. Torres , E. Sadurní , T. H. Seligman

It is usually considered that the spectrum of an optical cavity coupled to an atomic medium does not exhibit a normal-mode splitting unless the system satisfies the strong coupling condition, meaning the Rabi frequency of the coherent…

Quantum Physics · Physics 2017-01-06 Y. -H. Lien , G. Barontini , M. Scheucher , M. Mergenthaler , J. Goldwin , E. A. Hinds

The decay process of the schematic one-dimensional three-body system is considered. A time-dependent approach is used in combination with a one-dimensional three-body model, which is composed of a heavier core nucleus and two nucleons, with…

Nuclear Theory · Physics 2018-04-12 Tomohiro Oishi , Lorenzo Fortunato

We investigate the multiphoton quantum dynamics of a leaking single-mode quantized cavity field coupled with a resonantly driven two-level system possessing permanent dipoles. The frequencies of the interacting subsystems are being…

Quantum Physics · Physics 2021-04-27 Alexandra Mirzac , Sergiu Carlig , Mihai A. Macovei