244 research outputs found
Equilibrium distributions in entropy driven balanced processes
For entropy driven balanced processes we obtain final states with Poisson,
Bernoulli, negative binomial and P\'olya distributions. We apply this both for
complex networks and particle production. For random networks we follow the
evolution of the degree distribution, , in a system where a node can
activate fixed connections from possible partnerships among all nodes.
The total number of connections, , is also fixed. For particle physics
problems is the probability of having particles (or other quanta)
distributed among states (phase space cells) while altogether a fixed
number of particles reside on states.Comment: 12 pages no figure
Observables of Lattice Gauge Theory in Minkowski Space
U(1) gauge fields are decomposed into a monopole and photon part across the
phase transition from the confinement to the Coulomb phase. We analyze the
leading Lyapunov exponents of such gauge field configurations on the lattice
which are initialized by quantum Monte Carlo simulations. We observe that the
monopole field carries the same Lyapunov exponent as the original U(1) field.
Evidence is found that monopole fields stay chaotic in the continuum whereas
the photon fields are regular. First results are presented for the full
spectrum of Lyapunov exponents of the U(1) gauge system.Comment: Contribution to "QCD02 - High-Energy Physics International Conference
in Quantum Chromodynamics" (Montpellier, France, July 02 - 09, 2002); 5
pages, 9 figure
Entropy of expanding QCD matter
Using the lattice QCD equation of state for an isentropically expanding
fireball we follow the evolution of the effective number of particles in an
ideal gas pV/T. This number reduces roughly to its third around the crossover
temperature, which helps to circumvent the entropy obstacle inherent in quark
coalescence models of the hadronization.Comment: 5 pages 4 eps figures LaTe
Entropic Distance for Nonlinear Master Equation
More and more works deal with statistical systems far from equilibrium,
dominated by unidirectional stochastic processes augmented by rare resets. We
analyze the construction of the entropic distance measure appropriate for such
dynamics. We demonstrate that a power-like nonlinearity in the state
probability in the master equation naturally leads to the Tsallis
(Havrda-Charv\'at, Acz\'el-Dar\'oczy) q-entropy formula in the context of
seeking for the maximal entropy state at stationarity. A few possible
applications of a certain simple and linear master equation to phenomena
studied in statistical physics are listed at the end.Comment: Talk given by T.S.Bir\'o at BGL 2017, Gy\"ongy\"os, Hungar
Hadronization within the Non-Extensive Approach and the Evolution of the Parameters
We review transverse momentum distributions of various identified charged
particles stemming from high energy collisions fitted by various non-extensive
distributions as well as by the usual Boltzmann-Gibbs statistics. We
investigate the best-fit formula with the obtained values. We find
that the physical mass and scaling become more explicit with heavier
produced hadrons in both proton-proton and heavy-ion collisions. The spectral
shape parameters, in particular the temperature and the non-extensive
Tsallis parameter , do exhibit an almost linear dependence with the
centrality-dependence in heavy-ion collisions.Comment: 18 pages, 13 figure
Hadron Spectra Parameters within the Non-Extensive Approach
We investigate how the non-extensive approach works in high-energy physics.
Transverse momentum () spectra of several hadrons are fitted by various
non-extensive momentum distributions and by the Boltzmann--Gibbs statistics.~It
is shown that some non-extensive distributions can be transferred one into
another.~We find explicit hadron mass and center-of-mass energy {scaling both
in the temperature and in the non-extensive parameter, ,} in proton--proton
and heavy-ion collisions. We find that the temperature depends linearly, but
the Tsallis follows a logarithmic dependence on the collision energy in
proton--proton collisions. In the nucleus--nucleus collisions, on~the other
hand, and correlate linearly, as was predicted in our previous work.Comment: 8 pages, 3 figure
Stabil párosĂtások Ă©s általánosĂtásaik = Stable matchings and its generalizations
A kutatási programunkban Ăşgy Ă©rezzĂĽk, sikerĂĽlt megvalĂłsĂtani a kitűzött cĂ©lokat. A csatolt publikáciĂłs listában szereplĹ‘ 22 eredmĂ©nyĂĽnk többsĂ©gĂ©t szĂnvonalas nemzetközi folyĂłiratokban publikáltuk, vagy publikálni fogjuk. Számos nemzetközi konferencián vettĂĽnk rĂ©szt, ahol ismertettĂĽk az eredmĂ©nyeinket Ă©s több kollĂ©gával szakmai egyĂĽttműködĂ©st folytattunk. A kitűzött kutatási tervben az alábbi kutatási tĂ©mák szerepeltek: blokkolĂł Ă©lek minimális száma (2 publikáciĂł), stabil allokáciĂł gráfokon (7 publikáciĂł), Scarf lemma (1 publikáciĂł), kooperatĂv játĂ©kelmĂ©let (3 publikáciĂł), gyakorlati alkalmazások (8 publikáciĂł). EredmĂ©nyeink ezeken kĂvĂĽl a stabil párosĂtásoknak ill. azok általánosĂtásainak lĂ©tezĂ©sĂ©re ill. egyĂ©b problĂ©mákban törtĂ©nĹ‘ alkalmazásaira mutatnak rá. | We think that we succeeded to achieve our goal. Most of our 22 results in the attached list are published or will be published in high standard international journals. We participated several conferences, gave talks on these results and collaborated with colleagues. Our original research plan contains the following research topics: minimum number of blocking edges (2 publications), stable allocation on graphs (7 publications), Scarf's lemma (1 publication), cooperative game theory (3 publications), practical applications (8 publications). Beyond these, our results point out the existence of various generalizations of stable matchings and their applicability to other problems
Bioszén hatása a talaj-növény-mikróba rendszerre: előnyök és aggályok — Szemle
A rendelkezĂ©sre állĂł szakirodalmi hivatkozások a bioszĂ©n szĂ©leskörű felhaszná-lási lehetĹ‘sĂ©geit jelzik a talaj-növĂ©ny-mikroba kölcsönhatás alakulására. A bioszĂ©n kedvezĹ‘en befolyásolhatja a talajok fizikai-kĂ©miai tulajdonságait, pl. vĂzháztartását, agyag- Ă©s szervesanyag-tartalmát, a kĂ©mhatását, a N- Ă©s P-tartalmát, a mezo- Ă©s mikroelemek mennyisĂ©gĂ©t Ă©s porĂłzus szerkezete miatt annak levegĹ‘zöttsĂ©gĂ©t, az oxigĂ©ntartalmát vagy az oxigĂ©n relatĂv mennyisĂ©gĂ©t a pĂłrustĂ©rben.
A növĂ©nytáplálásra kifejtett kedvezĹ‘ hatások közvetlenĂĽl Ă©s közvetve is meg-nyilvánulhatnak. A mikroorganizmusok intenzĂvebb szaporodása a bioszĂ©nnel kezelt terĂĽleteken az irodalmi adatok alapján jĂłl megalapozottnak tekinthetĹ‘. A bioszĂ©n kiszáradástĂłl valĂł felĂĽleti vĂ©delmet, oxigĂ©ndĂşsabb környezetet, Ă©s adszor-beált szerves anyagokat is jelent a mikroorganizmusoknak; gombáknak Ă©s baktĂ©ri-umoknak egyaránt. A jobb mikrobiális ellátottság elĂ©rĂ©sĂ©hez a talaj a fizikai-kĂ©miai tulajdonságok mellett kedvezĹ‘ hĹ‘mĂ©rsĂ©klet Ă©s a kĂ©mhatás is hozzájárul.
A bioszĂ©n növĂ©nytermesztĂ©si technolĂłgiákba törtĂ©nĹ‘ integrálásának eredmĂ©nyei Ăgy leginkább rövidtávon, de termĂ©snövekedĂ©srĹ‘l adnak számot. A növĂ©nytermesztĂ©s szempontjábĂłl hasznos mikroszimbionta nitrogĂ©nkötĹ‘ baktĂ©riumok valamint a foszformobilizálĂł mikorrhiza gombák mennyisĂ©ge Ă©s aktivitása ugyanakkor erĹ‘sen dĂłzis Ă©s termĂ©kfĂĽggĹ‘. A növĂ©ny-mikroba szimbiĂłzis hatĂ©konysága a leginkább szĂĽksĂ©ges Ă©s kritikus környezeti stressz-körĂĽlmĂ©nyek között rosszabbodhat. AggĂł-dásra ad okot a helytelenĂĽl használt nagy bioszĂ©n-dĂłzisok tápanyag- Ă©s/vagy vĂzle-kötĹ‘ tulajdonsága Ă©s nem utolsĂł sorban a talajeredetű patogĂ©n mikroorganizmusok fokozott felszaporodási lehetĹ‘sĂ©ge is.
A bioszén tehát olyan értékes eszköz lehet a kezünkben, aminek előnyeit csak a megfelelő talajfizikai, -kémiai és -biológiai vizsgálatokra alapozottan, odafigyelés-sel és kellő szakmai ismeretekkel együtt használhatunk ki jól és biztonságosan
Generating new solutions for relativistic transverse flow at the softest point
Using the method of prolongation we generate new solutions from a simple
particular solution for relativistic transverse flow with cylindrical symmetry
in 1+3 dimensions. This is an extension of the longitudinal Bjorken flow ansatz
and can be applied among others during first order phase transition in an
expanding system. The prolongated solution allows for tracing back the flow
profile from a transverse flow conjectured at the end of phase transition at
CERN SPS heavy ion collisons.Comment: 11 pages LaTeX, 1 ps figur
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