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In this paper, a tractable methodology is proposed to approximate stochastic optimal feedback treatment in the context of mixed immuno-chemo therapy of cancer. The method uses a fixed-point value iteration that approximately solves a…

Systems and Control · Computer Science 2020-10-26 Mazen Alamir

We present a new method to calculate the total ion-ion interaction potential in terms of building blocks which we refer to as "single-particle interaction potentials". This allows also to compose the separate contributions from neutrons and…

Nuclear Theory · Physics 2012-01-06 A. S. Umar , V. E. Oberacker , J. A. Maruhn , P. -G. Reinhard

In this paper we study the long time asymptotic behavior for a class of diffusion-aggregation equations. Most results except the ones in Section 3.3 concern radial solutions. The main tools used in the paper are maximum-principle type…

Analysis of PDEs · Mathematics 2011-12-21 Yao Yao

This study concerns with singularly perturbed systems of second-order reaction-diffusion equations in ODE's. To handle this type of problems, a numerical-asymptotic hybrid method is employed. In this hybrid method, an efficient asymptotic…

Numerical Analysis · Mathematics 2018-08-15 Suleyman Cengizci , Natesan Srinivasan , M. Tarik Atay

Amongst Markov chain Monte Carlo algorithms, Hamiltonian Monte Carlo (HMC) is often the algorithm of choice for complex, high-dimensional target distributions; however, its efficiency is notoriously sensitive to the choice of the…

Computation · Statistics 2022-12-07 Chris Sherlock , Szymon Urbas , Matthew Ludkin

We formulate a time-optimal approach to adiabatic quantum computation (AQC). A corresponding natural Riemannian metric is also derived, through which AQC can be understood as the problem of finding a geodesic on the manifold of control…

Quantum Physics · Physics 2009-09-21 A. T. Rezakhani , W. -J. Kuo , A. Hamma , D. A. Lidar , P. Zanardi

We apply the path-integral method to study the multiple scattering and collective flow in intensity interferometry in high-energy heavy-ion collisions. We show that the Glauber model and eikonal approximation in an earlier quantum treatment…

High Energy Physics - Phenomenology · Physics 2014-11-18 Cheuk-Yin Wong

Differential cross sections of ($p,n$) and ($^3$He,$t$) charge-exchange reactions leading to the excitation of the isobaric analog state (IAS) of the target nucleus are calculated with the distorted wave Born approximation. The $G$-matrix…

Nuclear Theory · Physics 2021-02-10 Phan Nhut Huan , Nguyen Le Anh , Bui Minh Loc , Isaac Vidana

Relativistic Hartree equations for spherical nuclei have been derived from a relativistic quark model of the structure of bound nucleons which interact through the (self-consistent) exchange of scalar ($\sigma$) and vector ($\omega$ and…

Nuclear Theory · Physics 2010-02-17 Koichi Saito , Kazuo Tsushima , Anthony W. Thomas

We have constructed an empirical formulae for the fusion and interaction barriers using experimental values available till date. The fusion barriers so obtained have been compared with different model predictions based on the proximity,…

Nuclear Theory · Physics 2022-05-04 T. Nandi , D. K. Swami , P. S. Damodara Gupta , Yash Kumar , S. Chakraborty , H. C. Manjunatha

We study the optical response of a binary system of identical atoms in which one of them is excited by an incoherent pump. %We study the properties of photon scattering, absorption and emission, together with the time evolution of the…

Quantum Physics · Physics 2025-06-27 L. Acevedo , J. Sánchez-Cánovas , M. Donaire

We propose a (time) multiscale method for the coarse-grained analysis of self--propelled particle models of swarms comprising a mixture of `na\"{i}ve' and `informed' individuals, used to address questions related to collective motion and…

Populations and Evolution · Quantitative Biology 2012-02-28 Michael Raghib , Simon A. Levin , Ioannis G. Kevrekidis

Existing beam contact formulations can be categorized in point contact models that consider a discrete contact force at the closest point of the beams, and line contact models that assume distributed contact forces. In this work, it will be…

Computational Engineering, Finance, and Science · Computer Science 2017-03-08 Christoph Meier , Wolfgang A. Wall , Alexander Popp

To analyze nonlinear dynamic systems, we developed a new technique based on the square matrix method. We propose this technique called the \convergence map" for generating particle stability diagrams similar to the frequency maps widely…

Accelerator Physics · Physics 2023-06-07 Li Hua Yu , Yoshiteru Hidaka , Victor Smaluk

The discrete collisional breakage equation, which captures the dynamics of cluster growth when clusters encounter binary collisions with possible matter transfer, is discussed in this article. The existence of global mass-conserving…

Classical Analysis and ODEs · Mathematics 2023-07-26 Mashkoor Ali , Ankik Kumar Giri , Philippe Laurençot

We present a technique which allows us to solve the Random Phase Approximation equations with finite-range interactions and treats the continuum part of the excitation spectrum without approximations. The interaction used in the…

Nuclear Theory · Physics 2011-05-13 V. De Donno , G. Co' , M. Anguiano , A. M. Lallena

We formulate a lattice Hamiltonian model for intermediate energy heavy ion collisions. Our approach incorporates a momentum-dependent nuclear mean field that yields an optical potential that agrees with proton-nucleus experiments and that…

Nuclear Theory · Physics 2007-05-23 Declan Persram , Charles Gale

ADC-connect (adcc) is a hybrid python/C++ module for performing excited state calculations based on the algebraic-diagrammatic construction scheme for the polarisation propagator (ADC). Key design goal is to restrict adcc to this single…

Computational Physics · Physics 2020-01-22 Michael F. Herbst , Maximilian Scheurer , Thomas Fransson , Dirk R. Rehn , Andreas Dreuw

We examine the long-term asymptotic behavior of dissipating solutions to aggregation equations and Patlak-Keller-Segel models with degenerate power-law and linear diffusion. The purpose of this work is to identify when solutions decay to…

Analysis of PDEs · Mathematics 2011-03-29 Jacob Bedrossian

Nuclear Lattice Effective Field Theory is a new many-body approach that is firmly rooted in the symmetries of QCD. In particular, it allows for truly ab initio calculations of nuclear structure and reactions. In this talk, I focus on the…

Nuclear Theory · Physics 2015-09-29 Ulf-G. Meißner