Workshop EJČF 2020

Session

Teorie a fenomenologie

13 Jan 2020, 14:50

Bílý Potok (u Frýdlantu)

Conveners

Teorie a fenomenologie

• Karel Šafařík (FJFI CVUT)

Teorie a fenomenologie

• Jakub Kubát (CTU FNSPE)

Teorie a fenomenologie

• Jan Vaněk (Nuclear Physics Institute, Czech Academy of Sciences)

Teorie a fenomenologie

• Alena Bakalová (CTU FNSPE)

Teorie a fenomenologie

• Ota Zaplatílek (CTU FNSPE)

41. Collective measurement and system disturbance

Elisabeth Andriantsarazo (České vysoké učení technické v Praze)

13/01/2020, 14:50

In this presentation we will investigate a trade-off between the amount of quantum system disturbance and information gain. Basic theory of quantum measurement and classical information theory will be presented. We will first show possible ways of reducing the overall system disturbance by conveniently defining the measurement operators on two-particle systems. We will then generalize this...

40. Two-pion Photoproduction

Josef Uchytil (CTU FNSPE)

13/01/2020, 15:40

This talk will introduce the formalism necessary for describing the photoproduction of $\pi\pi$ pairs on the proton. This may occur via several channels, six of which - both charged and neutral - will be the main subject of this talk. Furthermore, experimental results obtained at JLab will be discussed.

44. Natural Orbitals for the Equation of Motion Phonon Method

Jan Pokorný (CTU FNSPE)

13/01/2020, 16:20

We discuss the use of natural orbitals as single-particle basis states for the Equation of Motion Phonon Method (EMPM). They are obtained by computing a ground-state one-body density matrix in second-order many-body perturbation theory. We focus our attention on energy and proton point radius of $^{16}$O and show that, with respect to Hartree-Fock, the new basis improves drastically the...

33. Complexity out of simplicity in atomic nuclei

Mr Petr Vesely (UJF AV)

13/01/2020, 17:20

There exist approximately 260 stable and 2500 unstable nuclear isotopes starting from the hydrogen up to superheavy elements with mass number ~ 290. Nuclear structure varies significantly across the nuclear chart and, moreover, even the different energy states of one given isotope can correspond to very diverse structures – there are single-particle or collective excitations, rotational and...

10. Struktura protonu

Dagmar Bendová (CTU FNSPE)

17/01/2020, 09:00

Dle teoretických předpovědí a experimentálních pozorování se proton skládá z tzv. partonů - kvarků a gluonů, které nesou frakce jeho podélné hybnosti. Hustoty těchto konstituentů jsou popsány partonovými distribučními funkcemi (PDF). Ty však představují pouze 1D obrázek struktury nukleonu. Zahrnutím dalších proměnných, jako je například příčná hybnost či poloha partonů, můžeme získat informace...

6. b-dependent BK in all its beauty

Marek Matas (České vysoké učení technické v Praze)

17/01/2020, 09:40

I focus on a thorough review of the BK formalism starting with a simplified derivation of the equation, then going over some of its features including how it relates to the observables and ending with its application to the b-dependent processes and cases of heavy nuclei.

43. Nonlinear dynamics

Tomáš Novák (CTU FNSPE)

17/01/2020, 10:35

Non-integrable nonlinear dynamical systems posses unusually interesting characteristics in terms of their phase space portraits, unlike of the linear dynamical system, from which they could arise as a perturbed case. The correspondence of periodic solution between perturbed and unperturbed case is presented as the KAM theorem in frame of Hamiltonian systems with constant energy. Understanding...