Zobrazeno 1 - 10
of 312
pro vyhledávání: '"Wiedemann, Urs Achim"'
Signatures of collectivity, including azimuthally anisotropic and radial flow as well as characteristic hadrochemical dependencies, have been observed since long in (ultra)relativistic nucleus-nucleus collisions. They underpin the interpretation of t
Externí odkaz:
http://arxiv.org/abs/2407.07484
Autor:
Attems, Maximilian, Brewer, Jasmine, Innocenti, Gian Michele, Mazeliauskas, Aleksas, Park, Sohyun, van der Schee, Wilke, Wiedemann, Urs Achim
Publikováno v:
JHEP 01 (2023) 080
The formalism of Baier-Dokshitzer-Mueller-Peign\'e-Schiff and Zakharov determines the modifications of parton splittings in the QCD plasma that arise from medium-induced gluon radiation. Here, we study medium-modifications of the gluon splitting into
Externí odkaz:
http://arxiv.org/abs/2203.11241
Autor:
Park, Sohyun, Wiedemann, Urs Achim
Publikováno v:
Phys. Rev. C 104, 044903 (2021)
We examine the spectrum of bremsstrahlung photons that results from the stopping of the initial net charge distributions in ultrarelativistic nucleus-nucleus collisions at the CERN Large Hadron Collier (LHC). This effect has escaped detection so far
Externí odkaz:
http://arxiv.org/abs/2107.05129
Publikováno v:
Phys. Rev. D 104, 083522 (2021)
We study how inhomogeneities of the cosmological fluid fields backreact on the homogeneous part of energy density and how they modify the Friedmann equations. In general, backreaction requires to go beyond the pressureless ideal fluid approximation,
Externí odkaz:
http://arxiv.org/abs/2106.10184
Autor:
Wiedemann, Urs Achim
This write-up of the ICHEP plenary "Heavy Ions - theory" focusses on some recent LHC discoveries and future opportunities in heavy ion physics (HIP) that are at the intersection with high energy physics (HEP).
Comment: 10 pages, 7 figures
Comment: 10 pages, 7 figures
Externí odkaz:
http://arxiv.org/abs/2101.01971
Autor:
Huss, Alexander, Kurkela, Aleksi, Mazeliauskas, Aleksas, Paatelainen, Risto, van der Schee, Wilke, Wiedemann, Urs Achim
Publikováno v:
Phys. Rev. Lett. 126, 192301 (2021)
We demonstrate that oxygen-oxygen (OO) collisions at the LHC provide unprecedented sensitivity to parton energy loss in a system whose size is comparable to those created in very peripheral heavy-ion collisions. With leading and next-to-leading order
Externí odkaz:
http://arxiv.org/abs/2007.13754
Autor:
Huss, Alexander, Kurkela, Aleksi, Mazeliauskas, Aleksas, Paatelainen, Risto, van der Schee, Wilke, Wiedemann, Urs Achim
Publikováno v:
Phys. Rev. C 103, 054903 (2021)
Medium induced parton energy loss is not conclusively established neither in very peripheral heavy-ion collisions nor in proton-ion collisions. However, the standard interpretation of azimuthal momentum anisotropies in theses systems implies some par
Externí odkaz:
http://arxiv.org/abs/2007.13758
The observation of fluid-like behavior in nucleus-nucleus, proton-nucleus and high-multiplicity proton-proton collisions motivates systematic studies of how different measurements approach their fluid-dynamic limit. We have developed numerical method
Externí odkaz:
http://arxiv.org/abs/2007.06851
Dark matter evolution during the process of cosmological structure formation can be described in terms of a one-particle irreducible effective action at a characteristic scale $k_m$ and a loop expansion below this scale, based on the effective propag
Externí odkaz:
http://arxiv.org/abs/1907.10729
Publikováno v:
Phys. Rev. Lett. 124, 102301 (2020)
Whether, how, and to what extent solutions of Bjorken-expanding systems become insensitive to aspects of their initial conditions is of importance for heavy-ion collisions. Here we study 1+1D and phenomenologically relevant boost-invariant 3+1D syste
Externí odkaz:
http://arxiv.org/abs/1907.08101