T. Dytrych
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View article: Ab initio informed 20Ne(p, pα)16O reaction elucidates the emergence of alpha clustering from chiral potentials
Ab initio informed 20Ne(p, pα)16O reaction elucidates the emergence of alpha clustering from chiral potentials Open
We report on the first ab initio informed α knock-out reaction in the intermediate-mass region, with the aim to probe the underlying chiral potential and its impact on the emergence of alpha clustering in this mass region. The theoretical …
View article: Understanding the Effect of Chiral NN Parametrization on Nuclear Shapes From an <i>Ab Initio</i> Perspective
Understanding the Effect of Chiral NN Parametrization on Nuclear Shapes From an <i>Ab Initio</i> Perspective Open
The ab initio symmetry-adapted no-core shell model naturally describes nuclear deformation and collectivity, and is therefore well-suited to studying the dynamics and coexistence of shapes in atomic nuclei. For the first time, we analyze h…
View article: Unexpected Rise in Nuclear Collectivity from Short-Range Physics
Unexpected Rise in Nuclear Collectivity from Short-Range Physics Open
We discover a surprising relation between the collective motion of nucleons within atomic nuclei, traditionally understood to be driven by long-range correlations, and short-range nucleon-nucleon interactions. Specifically, we find that qu…
View article: Ab initio informed 20Ne(p, p$α$)16O reaction elucidates the emergence of alpha clustering from chiral potentials
Ab initio informed 20Ne(p, p$α$)16O reaction elucidates the emergence of alpha clustering from chiral potentials Open
We report on the first \textit{ab initio} informed $α$ knock-out reaction in the intermediate-mass region, with the aim to probe the underlying chiral potential and its impact on the emergence of alpha clustering in this mass region. The t…
View article: <i>Ab initio</i> leading order effective potential for elastic proton scattering based on the symmetry-adapted no-core shell model
<i>Ab initio</i> leading order effective potential for elastic proton scattering based on the symmetry-adapted no-core shell model Open
Background: Calculating microscopic optical potentials for elastic scattering at intermediate energies from light nuclei in an ab initio fashion within the Watson expansion has been established within the last few years. Purpose: Based on …
View article: Coupling and Recoupling Coefficients for Wigner's U(4) Supermultiplet Symmetry
Coupling and Recoupling Coefficients for Wigner's U(4) Supermultiplet Symmetry Open
A novel procedure for evaluating Wigner coupling coefficients and Racah recoupling coefficients for U(4) in two group-subgroup chains is presented. The canonical U(4)->U(3)->U(2)->U(1) coupling and recoupling coefficients are applicable to…
View article: Ab initio leading order effective potential for elastic proton scattering based on the symmetry-adapted no-core shell model
Ab initio leading order effective potential for elastic proton scattering based on the symmetry-adapted no-core shell model Open
Based on the Watson expansion of the multiple scattering series, we employ a nonlocal translationally invariant nuclear density derived within the symmetry-adapted no-core shell model (SA-NCSM) framework from a chiral next-to-next-to-leadi…
View article: Uncertainty Quantification of Collective Nuclear Observables From the Chiral Potential Parametrization
Uncertainty Quantification of Collective Nuclear Observables From the Chiral Potential Parametrization Open
We perform an uncertainty estimate of quadrupole moments and B(E2) transition rates that inform nuclear collectivity. In particular, we study the low-lying states of 6Li and 12C using the ab initio symmetry-adapted no-core shell model. For…
View article: <i>Ab initio</i> translationally invariant nucleon-nucleus optical potentials
<i>Ab initio</i> translationally invariant nucleon-nucleus optical potentials Open
For this work, we combine the ab initio symmetry-adapted no-core shell model (SA-NCSM) with the single-particle Green's function approach to construct optical potentials rooted in first principles. Specifically, we show that total cross se…
View article: Response functions and giant monopole resonances for light to medium-mass nuclei from the \textit{ab initio} symmetry-adapted no-core shell model
Response functions and giant monopole resonances for light to medium-mass nuclei from the \textit{ab initio} symmetry-adapted no-core shell model Open
Using the \textit{ab initio} symmetry-adapted no-core shell model, we compute sum rules and response functions for light to medium-mass nuclei, starting from interactions that are derived in the chiral effective field theory. We investigat…
View article: Emergent symmetries in atomic nuclei: Probing nuclear dynamics and physics beyond the standard model
Emergent symmetries in atomic nuclei: Probing nuclear dynamics and physics beyond the standard model Open
Dominant shapes naturally emerge in atomic nuclei from first principles, thereby establishing the shape-preserving symplectic Sp(3, \mathbb{R} ) symmetry as remarkably ubiquitous and almost perfect symmetry in nuclei. We discuss the crit…
View article: Understanding the Effect of Chiral NN Parametrization on Nuclear Shapes From an Ab Initio Perspective
Understanding the Effect of Chiral NN Parametrization on Nuclear Shapes From an Ab Initio Perspective Open
The ab initio symmetry-adapted no-core shell model naturally describes nuclear deformation and collectivity, and is therefore well-suited to studying the dynamics and coexistence of shapes in atomic nuclei. For the first time, we analyze h…
View article: <i>Ab initio</i> single-neutron spectroscopic overlaps in lithium isotopes
<i>Ab initio</i> single-neutron spectroscopic overlaps in lithium isotopes Open
We calculate single-neutron spectroscopic overlaps for lithium isotopes in the framework of the ab initio symmetry-adapted no-core shell model. We report the associated neutron-nucleus asymptotic normalization coefficients (ANCs) and spect…
View article: New insights into backbending in the symmetry-adapted shell-model framework
New insights into backbending in the symmetry-adapted shell-model framework Open
Here we provide insights into the backbending phenomenon within the symmetry-adapted framework which naturally describes the intrinsic deformation of atomic nuclei. For 20Ne, the canonical example of backbending in light nuclei, the ab ini…
View article: Ab initio translationally invariant nucleon-nucleus optical potentials
Ab initio translationally invariant nucleon-nucleus optical potentials Open
We combine the \textit{ab initio} symmetry-adapted no-core shell model (SA-NCSM) with the single-particle Green's function approach to construct optical potentials rooted in first principles. Specifically, we show that total cross sections…
View article: Ab initio symmetry-adapted emulator for studying emergent collectivity and clustering in nuclei
Ab initio symmetry-adapted emulator for studying emergent collectivity and clustering in nuclei Open
We discuss emulators from the ab initio symmetry-adapted no-core shell-model framework for studying the formation of alpha clustering and collective properties without effective charges. We present a new type of an emulator, one that utili…
View article: Ab Initio Symmetry-Adapted Emulator for Studying Emergent Collectivity and Clustering in Nuclei
Ab Initio Symmetry-Adapted Emulator for Studying Emergent Collectivity and Clustering in Nuclei Open
We discuss emulators from the ab initio symmetry-adapted no-core shell-model framework for studying the formation of alpha clustering and collective properties without effective charges. We present a new type of an emulator, one that utili…
View article: Report on scipost_202212_00037v1
Report on scipost_202212_00037v1 Open
Dominant shapes naturally emerge in atomic nuclei from first principles, thereby establishing the shape-preserving symplectic Sp(3, ) symmetry as remarkably ubiquitous and almost perfect symmetry in nuclei.We discuss the critical role of t…
View article: Ab initio single-neutron spectroscopic overlaps in lithium isotopes
Ab initio single-neutron spectroscopic overlaps in lithium isotopes Open
We calculate single-neutron spectroscopic overlaps for lithium isotopes in the framework of the \textit{ab initio} symmetry-adapted no-core shell model. We report the associated neutron-nucleus asymptotic normalization coefficients (ANCs) …
View article: New Insights into Backbending in the Symmetry-adapted Framework
New Insights into Backbending in the Symmetry-adapted Framework Open
We provide new insights into backbending phenomenon within the symmetry-adapted framework which naturally describes the intrinsic deformation of atomic nuclei. For $^{20}\text{Ne}$, the canonical example of backbending in light nuclei, the…
View article: Machine learning approach to pattern recognition in nuclear dynamics from the <i>ab initio</i> symmetry-adapted no-core shell model
Machine learning approach to pattern recognition in nuclear dynamics from the <i>ab initio</i> symmetry-adapted no-core shell model Open
A novel machine learning approach is used to provide further insight into atomic nuclei and to detect orderly patterns amid a vast data of large-scale calculations. The method utilizes a neural network that is trained on ab initio results …
View article: Ab initio View of Emergent Symplectic Symmetry and Its Crutial Role in Nuclear Dynamics
Ab initio View of Emergent Symplectic Symmetry and Its Crutial Role in Nuclear Dynamics Open
Results of large-scale first principle nuclear structure studies using the symmetry-adapted no-core shell model are reported.It is shown that nuclei up through the intermediate-mass region display highly regular and ubiquitous patterns of …
View article: Efficacy of the symmetry-adapted basis for ab initio nucleon-nucleus interactions for light- and intermediate-mass nuclei
Efficacy of the symmetry-adapted basis for ab initio nucleon-nucleus interactions for light- and intermediate-mass nuclei Open
We study the efficacy of a new ab initio framework that combines the symmetry-adapted (SA) no-core shell-model approach with the resonating group method (RGM) for unified descriptions of nuclear structure and reactions. We obtain ab initio…
View article: Impact of clustering on the $^8$Li $\beta$ decay and recoil form factors
Impact of clustering on the $^8$Li $\beta$ decay and recoil form factors Open
We place unprecedented constraints on recoil corrections in the $\\beta$ decay\nof $^8$Li, by identifying a strong correlation between them and the $^8$Li\nground state quadrupole moment in large-scale ab initio calculations. The\nresults …
View article: Machine learning approach to pattern recognition in nuclear dynamics from the ab initio symmetry-adapted no-core shell model
Machine learning approach to pattern recognition in nuclear dynamics from the ab initio symmetry-adapted no-core shell model Open
A novel machine learning approach is used to provide further insight into atomic nuclei and to detect orderly patterns amidst a vast data of large-scale calculations. The method utilizes a neural network that is trained on ab initio result…
View article: Nuclear Dynamics and Reactions in the Ab Initio Symmetry-Adapted Framework
Nuclear Dynamics and Reactions in the Ab Initio Symmetry-Adapted Framework Open
We review the ab initio symmetry-adapted (SA) framework for determining the structure of stable and unstable nuclei, along with related electroweak, decay, and reaction processes. This framework utilizes the dominant symmetry of nuclear dy…
View article: SU(3)-guided realistic nucleon-nucleon interactions for large-scale calculations
SU(3)-guided realistic nucleon-nucleon interactions for large-scale calculations Open
We examine nucleon-nucleon realistic interactions, based on their SU(3) decomposition to SU(3)-symmetric components. We find that many of these interaction components are negligible, which, in turn, allows us to identify a subset of physic…