Pinol, Lucas Renaux-Petel, Sébastien Tada, Yuichiro

Stochastic inflation is an effective theory describing the super-Hubble, coarse-grained, scalar fields driving inflation, by a set of Langevin equations. We previously highlighted the difficulty of deriving a theory of stochastic inflation that is invariant under field redefinitions, and the link with the ambiguity of discretisation schemes definin...

Meyer, Hugues

The dynamics of many-body complex processes is a challenge that many scientists from various fields have to face. Reducing the complexity of systems involving a large number of bodies in order to reach a simple description for observables captur- ing the main features of the process is a difficult task for which different approaches have been propo...

Ring, Markus Weber, David Haiber, Patrick Pauly, Fabian Nielaba, Peter Scheer, Elke
Published in
Nano letters

We study voltage-induced conductance changes of Pb, Au, Al, and Cu atomic contacts. The experiments are performed in vacuum at low temperature using mechanically controllable break junctions. We determine switching histograms, i.e., distribution functions of switching voltages and switching currents, as a function of the conductance. We observe a c...

Seyrich, Maximilian

Das Darmbakterium Escherichia coli (E.coli ) ist in den Bereichen der Molekularbiologie, der Zellbiologie und des Forschungsfeldes der Mikroschwimmer eines der am besten erforschten Lebewesen. Die vorliegende Arbeit leistet einen Beitrag zur Grundlagenforschung der Chemotaxis von E.coli (gerichtete Bewegung entlang eines externen chemischen Stimulu...

baleanu, dumitru darzi, rahmat agheli, bahram

A new form of nonlinear Langevin equation (NLE), featuring two derivatives of non-integer orders, is studied in this research. An existence conclusion due to the nonlinear alternative of Leray-Schauder type (LSN) for the solution is offered first and, following that, the uniqueness of solution using Banach contraction principle (BCP) is demonstrate...

Song, Taesoo Moreau, Pierre Aichelin, Joerg Bratkovskaya, Elena

In this article we investigate how the drag coefficient $A$ and $\hat{q}$, the transverse momentum transfer by unit length, of charm quarks are modified if the QGP is not in complete thermal equilibrium using the dynamical quasi-particle model (DQPM) which reproduces both, the equation-of-state of the QGP and the spatial diffusion coefficient of he...

benth, fred espen khedher, asma vanmaele, michèle

Spot option prices, forwards and options on forwards relevant for the commodity markets are computed when the underlying process S is modelled as an exponential of a process &xi / with memory as, e.g., a Volterra equation driven by a Lé / vy process. Moreover, the interest rate and a risk premium &rho / representing storage costs, illiquidity...

Baulieu, Laurent Ciambelli, Luca Wu, Siye

We propose that the gauge principle of d-dimensional Euclidean quantum gravity is Weyl invariance in its stochastic (d+1)-dimensional bulk. Observables are defined as depending only on conformal classes of d-dimensional metrics. We work with the second order stochastic quantization of Einstein equations in a (d+1)-dimensional bulk. There, the evolu...

Wieder, Nicolas Fink, Rainer H A von Wegner, Frederic
Published in
Advances in experimental medicine and biology

In this article, we present an overview of simulation strategies in the context of subcellular domains where calcium-dependent signaling plays an important role. The presentation follows the spatial and temporal scales involved and represented by each algorithm. As an exemplary cell type, we will mainly cite work done on striated muscle cells, i.e....

Liu, Yan-Ping Li, Xiang Qu, Jing Gao, Xue-Juan He, Qing-Zu Liu, Li-Yu Liu, Ru-Chuan Shuai, Jian-Wei
Published in
Frontiers of Physics

Cell migration through anisotropic microenvironment is critical to a wide variety of physiological and pathological processes. However, adequate analytical tools to derive motile parameters to characterize the anisotropic migration are lacking. Here, we proposed a method to obtain the four motile parameters of migration cells based on the anisotrop...