Results 61 to 70 of about 200,989 (232)
Quantum‐Classical Simulation of Quantum Field Theory by Quantum Circuit Learning
Annalen der Physik, EarlyView.Quantum circuit learning is employed to simulate quantum field theories (QFTs). By integrating a minimal qubit configuration and low‐depth circuits, the approach predicts real‐time dynamics accurately. It effectively simulates complex phenomena such as quench and chiral dynamics in a model of quantum electrodynamics, aligning well with classical ...
Kazuki Ikeda
wiley +1 more source
The Astrophysical Journal, 2003 Revised significantly, ApJL accepted, or at http://vega.bac.pku.edu.cn/~rxxu/publications/index_P ...
openaire +2 more sources
From quark drops to quark stars [PDF]
The European Physical Journal A, 2016 We review some recent results about the mechanism of deconfinement of hadronic matter into quark matter in cold neutron stars and protoneutron stars. We discuss the role of finite size effects and the relevance of temperature and density fluctuations on the nucleation process. We also examine the importance of surface effects for mixed phases in hybrid
openaire +3 more sources
Nonradial oscillations of quark stars [PDF]
Physical Review D, 2003 Recently, it has been reported that a candidate for a quark star may have been observed. In this article, we pay attention to quark stars with radiation radii in the reported range. We calculate nonradial oscillations of $f$-, $w$- and $w_{\rm II}$-modes.
Hajime Sotani, Tomohiro Harada
openaire +3 more sources
The Chandrasekhar limit for quark stars [PDF]
Journal of Physics G: Nuclear and Particle Physics, 1999 The Chandrasekhar limit for quark stars is evaluated from simple energy balance relations, as proposed by Landau for white dwarfs or neutron stars. It has been found that the limit for quark stars depends on, in addition to the fundamental constants, the Bag constant.
Sibaji Raha +2 more
openaire +3 more sources
To differentiate neutron star models by X-ray polarimetry [PDF]
Chin. Phys. Lett. 30 (2013) 059501, 2013 The nature of pulsar is still unknown because of non-perturbative effects of the fundamental strong interaction, and different models of pulsar inner structures are then suggested, either conventional neutron stars or quark stars. Additionally, a state of quark-cluster matter is conjectured for cold matter at supranuclear density, as a result pulsars ...
arxiv +1 more source
Exploring Dark Photon Production and Kinetic Mixing Constraints in Heavy‐Ion Collisions
Astronomische Nachrichten, EarlyView.ABSTRACT Vector U‐bosons, often referred to as “dark photons,” are potential candidates for mediating dark matter interactions. In this study, we outline a procedure to derive theoretical constraints on the upper bound of the kinetic mixing parameter ϵ2MU$$ {\upvarepsilon}^2\left({M}_U\right) $$ using dilepton data from heavy‐ion from SIS to RHIC ...
Adrian William Romero Jorge +3 more
wiley +1 more source
Quark-Nova Explosion inside a Collapsar: Application to Gamma Ray Bursts
Advances in Astronomy, 2009 If a quark-nova occurs inside a collapsar, the interaction between the quark-nova ejecta (relativistic iron-rich chunks) and the collapsar envelope leads to features indicative of those observed in Gamma Ray Bursts.
Rachid Ouyed +3 more
doaj +1 more source
European Journal of Heart Failure, EarlyView.Changes in N‐terminal pro‐B‐type natriuretic peptide and assessment of clinical endpoints according to prior exposure to renin–angiotensin system inhibitors in the Pre‐specified substudy of Prospective comparison of ARNI with ARB Given following stabiLization In DEcompensated HFpEF (PARAGLIDE‐HF).
Nina Nouhravesh +14 more
wiley +1 more source
Quark deconfinement in neutron star cores and the ground state of neutral matter [PDF]
Eur.Phys.J.A34:153-160,2007, 2007 Whether or not deconfined quark phase exists in neutron star cores and represents the ground state of neutral matter at moderate densities are open questions. We use two realistic effective quark models, the three-flavor Nambu-Jona-Lasinio model and the modified quark-meson coupling model, to describe the neutron star matter.
arxiv +1 more source