Aleksi vuorinen. Physicists prepare to detect gravitational waves from neutron star collisions 2019-11-28

Aleksi Vuorinen looks into the heart of neutron stars

The results are used to solve the time evolution of the holographic entanglement entropy in strongly coupled dual conformal gauge theory, which is is seen to exhibit a regime of linear grow. Now researchers are expecting to detect similar gravitational wave signals in the near future from collisions involving neutron stars—for example, the merging of two neutron stars to form a black hole, or the merging of a neutron star and a black hole. The examples considered in the present paper may seem to be a bit artificial. . . Date: August 2, 2016 Source: University of Helsinki Summary: Scientists performed the first accurate determination of the thermodynamic properties of dense quark matter under violent conditions that occur during neutron star mergers, and suggest a step towards distinguishing between neutron and quark matter cores in neutron stars.

Aleksi Vuorinen's research works

Selected applications to heavy ion collision physics and cosmology are outlined in the last chapter. . Kvarkkien ja gluonien puuroa Aineen lisäksi Vuorinen on perehtynyt laskennallisiin menetelmiin. . .

Aleksi Vuorinen tähyää neutronitähtien ytimeen

This modified framework provides a much more accurate description of quark matter that is valid in the hot conditions present in neutron star mergers. So far, the best quantitative description of quark matter works only at a temperature of absolute zero. Observables considered include thermodynamic quantities, transport coefficients, and quasinormal m. Our purpose is to review the history and present status of finite-temperature perturbation theory as applied to the context of determining the equilibrium prope. This image is of radiation from a spinning neutron star. Applications are accepted from all fields.

Aleksi Vuorinen's research works

Various real-time correlation functions are defined Wightman, retarded, advanced, time-ordered, spectral. . As well as the many differences in the physics questions posed and in the microscopic forces playing a central role, the authors also explain the similarities and the techniques, such as the resummations, that are needed for developing a formally consistent perturbative expansion. . . Special emphasis is given to regions of phenomenological interest, and a number of important open questions as well as directions of ongoing research are pointed out. .

The 18th International Conference on QCD in Extreme Conditions (XQCD 2020)

We demonstrate how some of the degeneracies of the supersymmetric meson spectrum can be removed upon breaking the supersymmetry, thus leading to the emergence of hyperfine structure. A physically relevant spectral function related. . Matsubara sums are evaluated both in. Tähdet koostuvat erittäin tiheästä ydinaineesta eli yhteen puristuneista neutroneista, protoneista ja eräistä raskaammista atomiytimistä.

Mapping the exotic matter inside neutron stars: Do neutron stars contain exotic matter in the form of dense deconfined quark matter?

. Mapping the exotic matter inside neutron stars Do neutron stars contain exotic matter in the form of dense deconfined quark matter? The two Aleksis shared a dissertation supervisor, Keijo Kajantie. In particular, we determine the spectral functions and corresponding imaginary time correlators in the bulk and shear channels, and compare the results to recent. . .

Basics of Thermal Field Theory

. . You can be assured our editors closely monitor every feedback sent and will take appropriate actions. . Although this zero-temperature approximation is adequate for describing dormant neutron stars, neutron star collisions would have such drastically higher temperatures that thermal corrections are essential.

The 18th International Conference on QCD in Extreme Conditions (XQCD 2020)

Aleksi Vuoriselle myönnetty on tarkoitettu menestyneille tutkijoille, joilla on takanaan 7—12 vuoden lupaava ura tohtorin tutkinnon jälkeen. Examples are given for free scalar and fermion fields. Tärkeitä kumppaneita ovat niin kansainväliset saman alan kollegat kuin Helsingin yliopistossa toimivan ryhmän tutkijatohtorit. . .