We investigate the role of intrinsic nuclear geometry of ${}^{20}\mathrm{Ne}$ nucleus in particle production in small collision systems. Discrete geometrical representations of ${}^{20}\mathrm{Ne}$, including bipyramidal $\alpha$-cluster structure in two different configurations along with NLEFT configurations, are implemented within the Monte Carlo pythia8/Angantyr framework. The resulting particle production observables in ${}^{20}\mathrm{Ne}\text{−}{}^{20}\mathrm{Ne}$ collisions at $\sqrt{s_{NN}}=5.36\mathrm{TeV}$ are systematically compared with those obtained using conventional Woods-Saxon description as well as with the available hydrodynamic model calculations. We investigate the sensitivity of charged-particle multiplicity, transverse momentum distributions and mean transverse momentum $\langle p_T\rangle$ to nuclear geometry, $\alpha$ clustering, and orientation effects of ${}^{20}\mathrm{Ne}$ nucleus. While explicit clustering and orientation dependence lead to a noticeable modification in final-state charged-particle multiplicity, their impact on transverse momentum spectra and $\langle p_T\rangle$ remain modest in central collisions. The results highlight the role of intrinsic nuclear geometry and specific orientation of the colliding nuclei, providing insight into the dynamics of small systems in nonhydrodynamic particle production framework.

Building on the newly available solution of the Balitsky-Kovchegov (BK) equation with the full impact-parameter dependence, we extend the study of parton evolution from proton to nuclear targets. Since a key part of the scientific program for future experimental facilities such as the EIC is to study gluon dynamics and shed new light on the phenomenon of parton saturation, we present predictions for key processes, such as deep-inelastic scattering or the diffractive production of vector mesons, on a variety of nuclear targets. Besides the standard BK equation, we employ its linearized version to identify a promising channel to search for gluon saturation in the nuclear collisions. Furthermore, we implement a tetrahedral model of oxygen to search for deviations from the standard, isotropic, Woods-Saxon approach. In addition to the future colliders, the presented results are also of interest for the current studies of nuclear vector-meson production at the LHC.

The pairing effects on the entanglement properties of chiral doublet bands in the particle-hole $\pi {\left(1h_{11/2}\right)}^1\otimes \nu {\left(1h_{11/2}\right)}^{-1}$ configuration are investigated within the particle rotor model. The tripartite system is partitioned into three subsystems–proton, neutron, and collective rotor–each described by its reduced density matrix. Entanglement is quantified using the side lengths and geometric area of the concurrence triangle. The results reveal that the entanglement in the doublet bands increases with the neutron pairing gap ${\mathrm{\Delta }}_n$ and exhibits a pronounced dependence on the triaxial deformation parameter $\gamma$. These properties and behaviors are shown to originate directly from the underlying angular momentum geometry of the system and its response to pairing-induced reorientation.

I discuss how to generate entangled Bell states of two nucleons using unpolarized nucleon-nucleon scattering or the exclusive deuteron breakup reaction, following the approach of Shen et al. (arXiv:2510.24325v1), where Bell states were identified in unpolarized proton-proton elastic scattering. I confirm these results and show that, in the unpolarized proton-deuteron breakup reaction, it is also possible to generate proton-proton entangled Bell states in kinematically complete proton-proton quasifree scattering and final-state interaction configurations. I also discuss an experimental setup that, by exploiting such entangled states, could enable the teleportation of quantum mechanical states in a three-proton system. Such an experiment requires triple coincidences among the outgoing nucleons, which precludes the use of entangled Bell states generated with extremely polarized incoming particles. Since counting rates for unpolarized reactions are much higher than for polarized ones, the present results open a pathway toward searching for signatures of quantum state teleportation in hadronic systems.

The semimicroscopic particle-hole dispersive optical model, having unique abilities in describing main properties of various giant resonances in medium-heavy-mass spherical nuclei, is applied to a number of isoscalar giant multipole resonances in singly-closed-shell nuclei ${}^{58}\mathrm{Ni}, {}^{120}\mathrm{Sn}$, and ${}^{142}\mathrm{Nd}$. Some of the calculation results are compared with respective experimental data, including those obtained just recently. Special attention is paid to a comparison of calculated isoscalar multipole strength functions with the respective experimental strength distributions in a wide excitation-energy interval.

Disentangling reaction mechanisms in weakly bound nuclei remains a long-standing challenge, complicated by the common practice of treating absorption as an incoherent sum of channel contributions. Within the Continuum-Discretized Coupled-Channels (CDCC) framework, we apply the generalized optical theorem [S. R. Cotanch, Nucl. Phys. A 842, 48 (2010)] and show that the total absorption cross section, ${\sigma }_{\mathrm{A}}\propto -\langle \mathrm{\Psi }\left|W\right|\mathrm{\Psi }\rangle$, decomposes as ${\sigma }_{\mathrm{A}}={\sigma }_{\mathrm{D}}+{\sigma }_{\mathrm{B}}+{\sigma }_{\mathrm{int}}$, where ${\sigma }_{\mathrm{int}}$ is a coherent interference term between channel components. For the systems and complex fragment-target optical potentials considered, ${\sigma }_{\mathrm{int}}$ is negative and comparable in magnitude to the direct absorption terms. The off-diagonal imaginary couplings play a dual role: they redistribute flux among channels and generate ${\sigma }_{\mathrm{int}}$, which is required for flux-balance consistency. In calculations for $d+{}^{93}\mathrm{Nb}$ and ${}^6\mathrm{Li}+{}^{59}\mathrm{Co}/{}^{208}\mathrm{Pb}$, retaining the full nondiagonal coupling matrix nearly doubles the breakup-channel absorption for the heavy target, while reducing the total absorption through ${\sigma }_{\mathrm{int}}$. We demonstrate that neglecting the off-diagonal imaginary couplings $W_{ij}$ ($i\ne j$) is not merely an approximation but leads to a systematically biased physical picture: the total absorption is overestimated while the breakup absorption component is severely underestimated. Experimental analyses that employ incoherent-sum models to extract direct and breakup cross sections from data will inherit this bias. The full coupling matrix is therefore essential for mechanism-resolved cross-section extraction, and we advocate that experimentalists adopt full-coupling CDCC calculations as the standard for consistent interpretation of absorption data in weakly bound systems.

We perform the first simultaneous Bayesian inference of the temperature-dependent heavy-quark spatial diffusion coefficient $2\pi T{\mathcal{D}}_s$ and the scaled jet transport coefficient $\widehat{q}/T^3$ in the heavy flavor sector, utilizing $D$-meson nuclear modification factor $R_{\text{AA}}$ and elliptic flow $v_2$ data from $\mathrm{Pb}+\mathrm{Pb}$ collisions at $\sqrt{s_{NN}}=5.02\text{TeV}$. The analysis employs a unified improved Langevin transport model that incorporates both collisional and radiative energy loss, followed by coalescence plus fragmentation hadronization. The posterior distributions of the parameters of $\widehat{q}/T^3$ and those of $2\pi T{\mathcal{D}}_s$ are well constrained, and are found compatible with the results of theoretical models, other experimental data extractions, especially with the $\widehat{q}/T^3$ extraction using light flavor, large transverse momentum observables. The $30\text{–}50\%$ centrality data provide significantly stronger constraints than the $0\text{–}10\%$ data. The extracted ratio $\widehat{q}/\kappa$ between the quark jet transport and heavy-quark diffusion coefficients exhibits a nonmonotonic temperature dependence, deviating from the value 2 estimated from the definition, with a value interval spanning 0.25–0.8 corresponding to the mean values of the inferred parameters in the temperature range. This work establishes a data-driven quantitative relationship between these two fundamental transport properties in the $D$-meson observables, offering crucial insight into their interplay in the strongly coupled medium.

In the present work, I explore the production of ${\mathrm{\Xi }}^0{\overline{\mathrm{\Xi }}}^0$ using $e^{+}{e}^{-}$ collision data at ten center-of-mass energies between 3.51 and 4.95 GeV collected with the BESIII detector at the BEPCII collider and corresponding to an integrated luminosity of 30 ${\mathrm{fb}}^{-1}$ to study the structure of baryons. The data collected by the BESIII detector are useful for the study of XYZ states, and this collaboration continues the exploration of these exotic charmoniumlike states. At higher center-of-mass energies the baryon-antibaryon pair production in electron-positron annihilation provides a powerful tool. In this paper, I investigate a hyperon pair produced in the electron-positron annihilation reactions, and I present the phenomenological results for the process using the BESIII detector at the BEPCII collider. In the reaction $e^{+}{e}^{-}\to {\mathrm{\Xi }}^0{\overline{\mathrm{\Xi }}}^0$, I consider two different contributions: one from the $D$-meson loop and the other from the three-gluon charmonium annihilation. In this process I calculate the total cross section including the contributions of the $D$-meson loop and three-gluon loops as well as the interference of all diagrams. In the case of a purely electromagnetic mechanism for these contributions, large relative phases are generated. For a large momentum transferred region I get as a byproduct a fit of the electromagnetic form factor of the ${\mathrm{\Xi }}^0$ hyperon. In the present work, in addition to the $\psi \left(3770\right)$ charmonium, I also take into account the contributions of other charmonium (-like) states, such as $\psi \left(4040\right)$,  $\psi \left(4160\right)$,  $Y\left(4230\right)$,  $Y\left(4360\right)$,  $\psi \left(4415\right)$, and $Y\left(4660\right)$. On the whole my results are in good agreement with the available experimental data.

The possible existence of inhomogeneous chiral condensates, such as chiral density waves (CDWs), in the cores of neutron stars has garnered considerable theoretical interest. However, recent studies using nucleon-meson models incorporating electric charge neutrality, β equilibrium, and fermionic vacuum fluctuations suggest that CDW phases are energetically unfavorable under realistic neutron star conditions due to the softness of the resulting equation of state (EoS). In this work, we reexamine the viability of CDW phases in dense nuclear matter by introducing a strong magnetic field as an external symmetry-breaking background. Motivated by observations of magnetars and theoretical predictions of ultrastrong internal magnetic fields ($\gtrsim {10}^{18}\mathrm{G}$), we extend the nucleon-meson model to include magnetic catalysis and Landau quantization effects. We analyze the phase structure, focusing on the onset and stability of the CDW in magnetized matter, and compute corresponding neutron star mass-radius relations by solving the Tolman-Oppenheimer-Volkoff equations. Our results indicate that strong magnetic fields lower the critical baryon chemical potential for the onset of the CDW phase by up to $\approx 200\mathrm{MeV}$ compared to the zero-field case and stiffen the EoS in the relevant density regime, potentially allowing for stable neutron stars with anisotropic cores. These findings suggest that strong magnetic fields in neutron stars could make spatially modulated chiral phases possible in astrophysical environments.

Isomers have long been known to be important for astrophysical nucleosynthesis processes, yet they are often neglected in network calculations due to computational limitations or lack of data. "Astromers" are astrophysically metastable nuclear states that can greatly impact nucleosynthesis pathways. In this work we show that astromers further impact the time-dependent electromagnetic signal during heavy element nucleosynthesis. In an experiment performed at the National Superconducting Cyclotron Laboratory, three $\beta$-decaying states of ${}^{70}\mathrm{Cu}$ ($6^{-}$ ground state, and two isomeric states: $3^{-}$ and $1^{+}$) were produced. $\beta$-feeding values were extracted from experimental spectra and compared to shell-model and $\mathrm{QRPA}+\mathrm{PVC}$ calculations. Average $\gamma$-ray energies from the $\beta$-decay events were incorporated into simulations of heavy element nucleosynthesis and were found to exhibit different energy release profiles over time, which may impact, in aggregate, time-dependent observable signals.

Two isomers with $K^{\pi }=19/2^{+}$ at 1876 keV with a half-life of 21(1) ns, and $K^{\pi }=23/2^{-}$ at 2159 keV with a half-life of 93(6) ns have been identified in ${}^{173}\mathrm{W}$, the lightest tungsten isotope to exhibit this phenomenon. An unusually high number of 13 branches have been established in the decay of the $K^{\pi }=23/2^{-}$ isomer. This decay is associated with transitions involving significantly higher degrees of $K$ forbiddenness and is in sharp contrast with the usual preferential deexcitation through branches, which are less forbidden, as is evident for the $K^{\pi }=19/2^{+}$ state in ${}^{173}\mathrm{W}$. The inclusion of $K$-mixing effects, arising from band crossings in the sequences to which decays with larger degrees of $K$ forbiddenness are observed, can qualitatively account for this contrasting behavior. These results provide a striking illustration of the competition between $K$ conservation and $K$ mixing in the decay of such isomers.

Many features of heavy-ion collisions are well described by hybrid approaches, where the droplet of strongly coupled quark gluon plasma (QGP) is modeled by hydrodynamics and the subsequent dilute stage is performed with a hadronic transport model. Conventionally, the formation of a QGP is well established in larger collision systems like lead and gold. However, hints of collectivity were found even in proton-proton collisions, raising the question where the onset of QGP formation lays. This study aims at making predictions for the light-ions run at the CERN Large Hadron Collider in July 2025, in order to explore the applicability of hybrid approaches in smaller collision systems. We employ three different models: the SMASH-vHLLE-hybrid approach, the pure hadronic cascade of SMASH, and Angantyr to simulate O-O collisions at a center-of-mass energy of $\sqrt{s_{NN}}=5.36\mathrm{T}\mathrm{e}\mathrm{V}$. This setup allows us to compare evolutions with and without a hydrodynamic description on an equal basis, while Angantyr serves as a baseline for no collective effects.

We investigate the interaction of an antikaon ($K^{-}$) with the ${}^6\mathrm{Li}$ nucleus, described as an $\alpha +d$ cluster system. The study aims to explore the formation of the $\mathrm{\Lambda }\left(1405\right)$ resonance through the $K^{-}d$ subsystem in the presence of a spectator $\alpha$ particle. In the absence of dedicated experimental data for this reaction, particular attention is given to providing quantitative predictions for the manifestation of the $\mathrm{\Lambda }\left(1405\right)$ structure in low-energy $\overline{K}N$ dynamics within a light nuclear environment. Employing different models of the $\overline{K}N-\pi \mathrm{\Sigma }$ interaction, we calculate the $\pi \mathrm{\Sigma }n$ invariant-mass spectra and the $\alpha$-particle missing-mass spectra, thereby identifying robust features of the $\mathrm{\Lambda }\left(1405\right)$ signal and offering guidance for future experimental investigations.

We investigate the production and suppression of short-lived $K^{*}\left(892\right)$ resonances in $\mathrm{p}+\mathrm{p}$ and $\mathrm{Ar}+\mathrm{Sc}$ collisions at CERN-SPS energies ($\sqrt{s_{\mathrm{NN}}}=8.8$, 11.9, and 16.8 GeV) using the Ultrarelativistic Quantum Molecular dynamics (UrQMD) model. We present multiplicities, rapidity, and transverse momentum distributions, and analyze the $K^{*}/K$ yield ratios as a function of energy and centrality. We further estimate the time interval between chemical and kinetic freezeout using the experimental method. A detailed comparison with recent NA61/SHINE data demonstrates that the UrQMD model captures the essential features of resonance dynamics, although the very strong resonance suppression in central collisions observed in the data cannot be quantitatively reproduced.

In this work, we employ quantum entanglement entropy to study the evolution of nuclear shell structures. We focus on using single-orbital entropy and total entanglement entropy to explore the stability and evolution of shell structures in neutron-rich nuclei, particularly along the oxygen and calcium isotopic chains. By performing shell model calculations, we derive occupation numbers and compute entanglement metrics to shed light on the emergence and disappearance of magic numbers. The behavior of the entanglement entropy was investigated in the vicinity of the islands of inversion at neutron numbers $N$ = 40 and $N$ = 50, with particular attention to the Cr, Fe, and Ni isotones. Our findings underscore the critical role of quantum entanglement in understanding shell closures, revealing exotic structural features such as new magic numbers and shell evolution in neutron-rich regions.

Total reaction cross sections for ${}^{12}\mathrm{C}$-induced reactions are investigated over a wide energy range from 0 to 5000 MeV using an intranuclear cascade (INC) model. The model is an extension of the framework previously applied to nucleon-, deuteron-, and α-particle-induced reactions. The experimental data for ${}^{12}\mathrm{C}, {}^{27}\mathrm{Al}, {}^{\mathrm{nat}}\mathrm{Fe}$ (92% ${}^{56}\mathrm{Fe}$), and ${}^{115}\mathrm{In}$ are well reproduced using reconstructed in-medium two-body cross sections and parameters consistent with earlier studies. The discrete-level constraint (DLC) effect and the Coulomb effect are shown to make significant contributions that depend on both the target nucleus and the incident energy. The influence of the DLC is confined to a narrow low-energy region and is more pronounced for light targets, whereas the Coulomb effect plays a decisive role at low energies for all targets and becomes increasingly important for heavier nuclei. The trends of these contributions are consistent with those observed in total reaction cross sections induced by protons, deuterons, and α particles reported in previous works. The breakup of ${}^{12}\mathrm{C}$ induced by the target potential is found to be non-negligible, with single-particle breakup channels such as ${}^{11}\mathrm{C}$-n or ${}^{11}\mathrm{B}$-p dominating the process. In particular, ${}^{11}\mathrm{C}$ is emitted predominantly at very forward angles below 1400 MeV, where the Coulomb force acts effectively on charged particles. These results demonstrate that the extended INC model, which incorporates two quantum corrections (the Pauli principle and DLC) and properly accounts for the Coulomb interaction, is capable of describing total reaction cross sections for a wide range of target nuclei over energies extending from the very low-energy region up to 5000 MeV.