Blar i Vitenskapelige publikasjoner (IMF) på tittel

Viser treff 110-129 av 179

    • On a class of integrable systems of Monge-Ampère type 

      Doubrov, Boris; Ferapontov, Eugene V.; Kruglikov, Boris; Novikov, Vladimir (Journal article; Peer reviewed, 2017-06)
      We investigate a class of multi-dimensional two-component systems of Monge-Ampère type that can be viewed as generalisations of heavenly type equations appearing in a self-dual Ricci-flat geometry. Based on the Jordan-Kronecker ...

    • On Universal Black Holes 

      Hervik, Sigbjørn; Ortaggio, Marcello (Peer reviewed; Journal article, 2020)
      Recent results on universal black holes in d dimensions are summarized. These are static metrics with an isotropy-irreducible homogeneous base space which can be consistently employed to construct solutions to virtually ...

    • On-shell recursion relations for nonrelativistic effective field theories 

      Mojahed, Martin Aria; Brauner, Tomas (Peer reviewed; Journal article, 2021-10)
      We derive on-shell recursion relations for nonrelativistic effective field theories (EFTs) with enhanced soft limits. The recursion relations are illustrated through analytic calculation of tree-level scattering amplitudes ...

    • Opacity dependence of elliptic flow in kinetic theory 

      Kurkela, Aleksi; Wiedemann, Urs Achim; Wu, Bin (Peer reviewed; Journal article, 2019-09)
      The observation of large azimuthal anisotropies vn in the particle spectra of proton–proton (pp) and proton–nucleus (pA) collisions challenges fluid dynamic interpretations of vn, as it remains unclear how small collision ...

    • Open-quantum-systems approach to in-medium heavy quarkonium dynamics 

      Rothkopf, Alexander Karl (Peer reviewed; Journal article, 2023)
      Heavy quarkonium continues to play a central role in the study of nuclear matter under extremes of temperature and density in relativistic heavy-ion collisions. In this talk I report on recent developments in the theoretical ...

    • Optimisation of Thimble simulations and quantum dynamics of multiple fields in real time 

      Woodward, Simon; Saffin, Paul M.; Mou, Zonggang; Tranberg, Anders (Peer reviewed; Journal article, 2022)
      We apply the Generalised Thimble approach to the computation of exact path integrals and correlators in real-time quantum field theory. We first investigate the details of the numerical implementation and ways of optimizing ...

    • Order parameter dynamics of the non-linear sigma model in the large N limit 

      Gemsheim, Sebastian; Mandal, Ipsita; Sengupta, Krishnendu; Wang, Zhiqiang (Peer reviewed; Journal article, 2020)
      We study non-equilibrium order parameter dynamics of the non-linear sigma model in the large N limit, using Keldysh formalism. We provide a scheme for obtaining stable numerical solution of the Keldysh saddle point equations ...

    • Perturbative thermal QCD: Formalism and applications 

      Ghiglieri, Jacopo; Kurkela, Aleksi; Strickland, Michael; Vuorinen, Aleksi (Peer reviewed; Journal article, 2020)
      In this review article, we discuss the current status and future prospects of perturbation theory as a means of studying the equilibrium thermodynamic and near-equilibrium transport properties of deconfined QCD matter. We ...

    • Pion condensation and phase diagram in the Polyakov-loop quark-meson model 

      Adhikari, Prabal; Andersen, Jens Oluf; Kneschke, Patrick (Journal article; Peer reviewed, 2018-10)
      We use the Polyakov-loop extended two-flavor quark-meson model as a low-energy effective model for QCD to study the phase diagram in the μI–T planewhere μI is the isospin chemical potential. In particular, we focus on the ...

    • Pion condensation and QCD phase diagram at finite isospin density 

      Andersen, Jens Oluf; Adhikari, Prabal; Kneschke, Patrick (Journal article; Peer reviewed, 2019-09)
      We use the Polyakov-loop extended two-flavor quark-meson model as a low-energy effective model for QCD to study 1) the possibility of inhomogeneous chiral condensates and its competition with a homogeneous pion condensate ...

    • Porous flow with diffuse interfaces 

      Papatzacos, Paul Georg (Chapter, 2021)
      This chapter presents a model developed by the author, in publications dated from 2002 to 2016, on flow in porous media assuming diffuse interfaces. It contains five sections. Section 1 is an Introduction, tracing the ...

    • Predicting parton energy loss in small collision systems 

      Huss, Alexander; Kurkela, Aleksi; Mazeliauskas, Aleksas; Paatelainen, Risto; van der Schee, Wilke; Wiedemann, Urs Achim (Peer reviewed; Journal article, 2021)
      Medium induced parton energy loss is not conclusively established either in very peripheral heavy-ion collisions or in proton-ion collisions. However, the standard interpretation of azimuthal momentum anisotropies in these ...

    • Prevalence of bradycardia in 4876 newborns in the first minute after birth and association with positive pressure ventilation: A population-based cross-sectional study 

      Rettedal, Siren; Kibsgaard-Petersen, Amalie; Kvaløy, Jan Terje; Eilevstjønn, Joar; Ersdal, Hege Langli (Peer reviewed; Journal article, 2023)
      Objective To determine the prevalence of bradycardia in the first minute after birth and association with positive pressure ventilation (PPV). Method A population-based cross-sectional study was conducted from June 2019 ...

    • Proper static potential in classical lattice gauge theory at finite T 

      Lehmann, Alexander; Rothkopf, Alexander Karl (Peer reviewed; Journal article, 2021)
      We compute the proper real-time interaction potential between a static quark and antiquark in classical lattice gauge theory at finite temperature. Our central result is the determination of the screened real-part of this ...

    • Pulsar timing array stochastic background from light Kaluza-Klein resonances 

      Megías, Eugenio; Nardini, Germano; Quirós, Mariano (Peer reviewed; Journal article, 2023-11)
      We investigate the potential of the warped extradimension framework as an explanation for the recently observed stochastic gravitational background at nHz frequencies in pulsar timing arrays (PTA). Our analysis reveals ...

    • Quantum corrections to slow-roll inflation: scalar and tensor modes 

      Andersen, Jens Oluf; Eriksson, Magdalena Britt; Tranberg, Anders (Peer reviewed; Journal article, 2021)
      Inflation is often described through the dynamics of a scalar field, slow-rolling in a suitable potential. Ultimately, this inflaton must be identified with the expectation value of a quantum field, evolving in a quantum ...

    • Quantum dynamical dissociation of quarkonia by wave function decoherence in quark-gluon plasma 

      Kajimoto, Shiori; Akamatsu, Yukinao; Asakawa, Masayuki; Rothkopf, Alexander Karl (Peer reviewed; Journal article, 2019-02)
      In this study, we investigate the real-time evolution of quarkonium bound states in a quark-gluon plasma in an improved QCD based stochastic potential model. This model describes the quarkonium dynamics in terms of a ...

    • Quantum gravity phenomenology at the dawn of the multi-messenger era—A review 

      Addazi, A.; Alvarez-Muniz, J.; Alves Batista, Batista; Amelino-Camelia, G.; Antonelli, V.; Arzano, M.; Asorey, M.; Atteia, J.-L.; Bahamonde, S.; Bajardi, F.; Ballesteros, A.; Baret, B.; Barreiros, D.M.; Basilakos, S.; Benisty, D.; Birnholtz, O.; Blanco-Pillado, J.J.; Blas, D.; Bolmont, J.; Boncioli, D.; Bosso, P.; Calcagni, G.; Capozziello, S.; Carmona, J.M.; Cerci, S.; Chernyakova, M.; Clesse, S.; Coelho, J.A.B.; Colak, S.M.; Cortes, J.L.; Das, S.; D'Esposito, V.; Demirci, M.; Di Luca, Luca; di Matteo, Matteo; Dimitrijevic, D.; Djordjevic, G.; Prester, D. Dominis; Eichhorn, A.; Ellis, J.; Escamilla-Rivera, C.; Fabiano, G.; Franchino-Viñas, S.A.; Frassino, A.M.; Frattulillo, D.; Funk, S.; Fuster, A.; Gamboa, J.; Gent, A.; Gergely, L.A.; Giammarchi, M.; Giesel, K.; Glicenstein, J.-F.; Gracia-Bondía, J.; Gracia-Ruiz, R.; Gubitosi, G.; Guendelman, E.I.; Gutierrez-Sagredo, I.; Haegel, L.; Heefer, S.; Held, A.; Herranz, F.J.; Hinderer, T.; Illana, J.I.; Ioannisian, A.; Jetzer, P.; Joaquim, F.R.; Kampert, K.-H.; Uysal, A. Karasu; Katori, T.; Kazarian, N.; Kerszberg, D.; Kowalski-Glikman, J.; Kuroyanagi, S.; Lämmerzahl, C.; Said, J. Levi; Liberati, S.; Lim, E.; Lobo, I.P.; López-Moya, M.; Luciano, G.G.; Manganaro, M.; Marcianò, A.; Martín-Moruno, P.; Martinez, Manel; Martinez, Mario; Martínez-Huerta, H.; Martínez-Miravé, P.; Masip, M.; Mattingly, D.; Mavromatos, N.; Mazumdar, A.; Méndez, F.; Mercati, F.; Micanovic, S.; Mielczarek, J.; Miller, A.L.; Milosevic, M.; Minic, D.; Miramonti, L.; Mitsou, V.A.; Moniz, P.; Mukherjee, S.; Nardini, Germano; Navas, S.; Niechciol, M.; Nielsen, A.B.; Obers, N.A.; Oikonomou, Foteini; Oriti, D.; Paganini, C.F.; Palomares-Ruiz, S.; Pasechnik, R.; Pasic, V.; Pérez de los Heros, de; Pfeifer, C.; Pieroni, M.; Piran, T.; Platania, A.; Rastgoo, S.; Relancio, J.J.; Reyes, M.A.; Ricciardone, Angelo; Risse, M.; Frias, M.D. Rodriguez; Rosati, G.; Rubiera-Garcia, D.; Sahlmann, H.; Sakellariadou, M.; Salamida, F.; Saridakis, E.N.; Satunin, P.; Schiffer, M.; Schüssler, F.; Sigl, G.; Sitarek, J.; Peracaula, J. Solà; Sopuerta, C.F.; Sotiriou, T.P.; Spurio, M.; Staicova, D.; Stergioulas, N.; Stoica, S.; Strišković, J.; Stuttard, T.; Cerci, D. Sunar; Tavakoli, Y.; Ternes, C.A.; Terzić, T.; Thiemann, T.; Tinyakov, P.; Torri, M.D.C.; Tórtola, M.; Trimarelli, C.; Trześniewski, T.; Tureanu, A.; Urban, Federico; Vagenas, E.C.; Vernieri, D.; Vitagliano, V.; Wallet, J.-C.; Zornoza, J.D. (Peer reviewed; Journal article, 2022)
      The exploration of the universe has recently entered a new era thanks to the multi-messenger paradigm, characterized by a continuous increase in the quantity and quality of experimental data that is obtained by the detection ...

    • Quantum tunnelling, real-time dynamics and Picard-Lefschetz thimbles 

      Mou, Zonggang; Saffin, Paul M.; Tranberg, Anders (Peer reviewed; Journal article, 2019-11)
      We follow up the work, where in light of the Picard-Lefschetz thimble approach, we split up the real-time path integral into two parts: the initial density matrix part which can be represented via an ensemble of initial ...

    • Quarkonium phenomenology from a generalised Gauss law 

      Lafferty, David; Rothkopf, Alexander Karl (Peer reviewed; Journal article, 2019-05)
      We present an improved analytic parametrisation of the complex in-medium heavy quark potential derived rigorously from the generalised Gauss law. To this end we combine in a self-consistent manner a non-perturbative vacuum ...