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In this talk I describe work on computing non-leptonic matrix elements consistently with both long and short distance contributions included. On the simpler example of the $\pi^+$-$\pi^0$ mass difference I explain in detail the matching…

高能物理 - 唯象学 · 物理学 2009-10-31 Johan Bijnens

We calculate the decoherence time of the ground state wave function of a nucleus in a high energy heavy ion collision. We define this time as the decay time of the ratio Tr D^2 / (Tr D)^2 of traces of the density matrix D. We find that this…

高能物理 - 唯象学 · 物理学 2008-11-26 Berndt Muller , Andreas Schafer

A Monte Carlo model has been developed to study the degradation of <1000 eV electrons in an atmosphere of CO2, which is one of the most abundant species in Mars' and Venus' atmospheres. The e-CO2 cross sections are presented in an assembled…

地球与行星天体物理 · 物理学 2010-11-22 Anil Bhardwaj , Sonal Kumar Jain

Weak interaction rates on titanium isotopes are important during the late phases of evolution of massive stars. A search was made for key titanium isotopes from available literature and a microscopic calculation of weak rates of these…

核理论 · 物理学 2011-08-09 Jameel-Un Nabi

We use Monte Carlo approach to study the energetics of electrons accelerated in a pulsar polar gap. As energy-loss mechanisms we consider magnetic Compton scattering of thermal X-ray photons and curvature radiation. The results are compared…

天体物理学 · 物理学 2007-05-23 J. Dyks , B. Rudak

In large volume models reheating is driven by the decays of the volume modulus to the visible sector, while the decays to its axion partners result in dark radiation. In this article we discuss the impact of loop corrections on the only…

高能物理 - 唯象学 · 物理学 2013-12-18 Stephen Angus , Joseph P. Conlon , Ulrich Haisch , Andrew J. Powell

We propose a new application of the Extreme Value Theory for distributions with compact support. The novelty of our proposal is the use of these tools to estimate the neutrino mass from the energy spectrum of electrons in $\beta$-decay. In…

数据分析、统计与概率 · 物理学 2015-06-18 J. G. Esteve , F. Falceto

\textit{Ab initio} quantum Monte Carlo (QMC) methods in principle allow for the calculation of exact properties of correlated many-electron systems, but are in general limited to the simulation of a finite number of electrons $N$ in…

统计力学 · 物理学 2021-04-21 Tobias Dornheim , Jan Vorberger

We briefly review some of the models and theoretical schemes established to describe heavy quark quenching in ultrarelativistic heavy ions collisions. Some lessons are derived from RHIC and early LHC data, especially as for the contraints…

高能物理 - 唯象学 · 物理学 2015-06-03 Pol Gossiaux , Joerg Aichelin , Thierry Gousset

We consider non-relativistic electron correlation energies of heavy noble gas atoms including the superheavy element Og. The corresponding data enables us to quantify fixed-node errors in real space quantum Monte Carlo methods as a function…

强关联电子 · 物理学 2024-06-18 Lubos Mitas

The theoretical approach to a sequential heavy ion double charge exchange reaction is presented. A brief introduction into the formal theory of second-order nuclear reactions and their application to Double Single Charge Exchange (DSCE)…

核理论 · 物理学 2021-04-13 Horst Lenske , Jessica Bellone , Maria Colonna , Danilo Gambacurta

The study of highly charged ions offers a unique platform for probing the breakdown of non-relativistic theory under the influence of extreme electromagnetic environments. Here, we investigate the photoabsorption of highly charged ions…

其他凝聚态物理 · 物理学 2026-04-03 Anvar Khujakulov , Caterina Cocchi

The increasing richness of data related to cold dense matter, from laboratory experiments to neutron-star observations, requires a framework for constraining the properties of such matter that makes use of all relevant information. Here, we…

高能天体物理现象 · 物理学 2020-01-08 M. Coleman Miller , Cecilia Chirenti , Frederick K. Lamb

During near-Sun crossings of the heliospheric current sheet (HCS), Parker Solar Probe (PSP) observed populations of high-energy protons and heavier ions indicating possible energization by magnetic reconnection up to 10s -- 100s keV…

太阳与恒星天体物理 · 物理学 2026-05-15 Giulia Murtas , Xiaocan Li , Fan Guo , Giuseppe Arrò , Jeongbhin Seo , Colby Haggerty

We describe the formation of swift heavy ion tracks in polyethylene (PE) by combining the Monte Carlo code TREKIS, which models electronic excitation in nanometric proximity of the ion trajectory, with the molecular dynamics simulating a…

材料科学 · 物理学 2024-06-12 P. Babaev , F. Akhmetov , S. Gorbunov , N. Medvedev , R. Rymzhanov , R. Voronkov , A. E. Volkov

We discuss how the finiteness of the system created in a heavy-ion collision affects possible signatures of the QCD critical endpoint. We show sizable results for the modifications of the chiral phase diagram at volume scales typically…

高能物理 - 唯象学 · 物理学 2010-02-24 Leticia F. Palhares , Eduardo S. Fraga , Takeshi Kodama

We analyze the suppression of particle production at large transverse momenta in ($0-5%$ most) central collisions of gold nuclei at $\sqrt{s_\textrm{NN}}=$ 200 GeV and lead nuclei at $\sqrt{s_{\textrm{NN}}}=$ 2.76 TeV. Full next-to-leading…

核理论 · 物理学 2015-05-27 Dinesh K. Srivastava

We present suppression results for high-$p_T$ $D$ and $\pi$ mesons produced in $p / d + A$ and $A+A$ collisions at RHIC and LHC. These results are computed using a convolved elastic and radiative energy loss model, which receives small…

核理论 · 物理学 2024-09-24 Coleridge Faraday , W. A. Horowitz

We investigate finite-size effects on the chiral phase diagram of strong interactions within the linear sigma model coupled to quarks. We estimate the modification of the pseudocritical transition line and isentropic trajectories for sizes…

核理论 · 物理学 2011-07-14 L. F. Palhares , E. S. Fraga , T. Kodama

The original Lindhard-Scharff-Schi{\o}tt (LSS) theory and the more recent Tilinin theory for calculating the nuclear and electronic stopping powers of slow heavy ions are compared with predictions from the SRIM code by Ziegler. While little…

仪器与探测器 · 物理学 2009-09-29 A. Mangiarotti , M. I. Lopes , M. L. Benabderrahmane , V. Chepel , A. Lindote , J. Pinto da Cunha , P. Sona