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Contribución de congreso (ConferenceOutput). 2020
ππ scattering from a similarity renormalization group perspective
Digibug. Repositorio Institucional de la Universidad de Granada
- Gómez Rocha, María|||0000-0002-9513-5797
- Ruiz Arriola, Enrique|||0000-0002-9570-2552
We thank Varese Salvador Timoteo for discussions. This work has been supported in part by the European Commission
under the Marie Skłodowska-Curie Action Co-fund 2016 EU project 754446 – Athenea3i and by the Spanish
MINECO’s Juan de la Cierva-Incorporación programme, Grant Agreement No. IJCI-2017-31531, FIS2017-8503-C2-
1-P and Junta de Andalucía (grant FQM225)., A Wilsonian approach based on the similarity renormalization group to ππ scattering is analyzed in the JI = 00, 11 and 02 channels in momentum space up to a maximal center-of-mass energy of s⎯⎯√=1.4 GeV. We identify the Hamiltonian by means of the 3D reduction of the Bethe-Salpeter equation in the Kadyschevsky scheme. We propose a new method to integrate the SRG equations based in the Crank-Nicolson algorithm with a single step finite difference so that isospectrality is preserved at any step of the calculations. We discuss issues on the high momentum tails present in the fitted interactions hampering calculations., European Commission under the Marie Sklodowska-Curie Action Co-fund 2016 EU project
754446 - Athenea3i, Spanish MINECO's Juan de la Cierva-Incorporacion programme
IJCI-2017-31531
FIS2017-8503-C21-P, Junta de Andalucia
FQM225
under the Marie Skłodowska-Curie Action Co-fund 2016 EU project 754446 – Athenea3i and by the Spanish
MINECO’s Juan de la Cierva-Incorporación programme, Grant Agreement No. IJCI-2017-31531, FIS2017-8503-C2-
1-P and Junta de Andalucía (grant FQM225)., A Wilsonian approach based on the similarity renormalization group to ππ scattering is analyzed in the JI = 00, 11 and 02 channels in momentum space up to a maximal center-of-mass energy of s⎯⎯√=1.4 GeV. We identify the Hamiltonian by means of the 3D reduction of the Bethe-Salpeter equation in the Kadyschevsky scheme. We propose a new method to integrate the SRG equations based in the Crank-Nicolson algorithm with a single step finite difference so that isospectrality is preserved at any step of the calculations. We discuss issues on the high momentum tails present in the fitted interactions hampering calculations., European Commission under the Marie Sklodowska-Curie Action Co-fund 2016 EU project
754446 - Athenea3i, Spanish MINECO's Juan de la Cierva-Incorporacion programme
IJCI-2017-31531
FIS2017-8503-C21-P, Junta de Andalucia
FQM225