Article
Chemistry, Physical
Jiraphant Srisuriyachot, Sophie A. M. McNair, Yang Chen, Thomas Barthelay, Rob Gray, Jean Benezech, Igor P. Dolbnya, Richard Butler, Alexander J. G. Lunt
Summary: This paper investigates the feasibility of using synchrotron X-ray diffraction (SXRD) for mapping fiber orientation and lattice strain in carbon fiber reinforced polymer (CFRP) composites. The SXRD results are found to provide relatively accurate estimates of lattice strain, but discrepancies still exist compared to numerical simulation results.
Article
Astronomy & Astrophysics
Thiago Araujo, Domenico Orlando, Susanne Reffert
Summary: The study focused on quantum crystal melting in three dimensions. By reformulating the crystal melting Hamiltonian as an occupancy problem in a Kagome lattice, a fermion-boson duality for plane partitions was defined. Based on this, it was conjectured that the growth operators for the quantum Hamiltonian can be represented in terms of the affine Yangian Y[(gl) over cap (1))].
Article
Optics
Antonio D'Abbruzzo, Davide Rossini
Summary: This study presents a rigorous construction method for a wide class of quantum systems, including finite size quadratic models linearly coupled to an environment modeled by independent thermal baths. The effective Lindblad operators of nondegenerate systems under a full secular approximation are shown to be the normal modes of the system, with coupling constants depending on the transformation matrices that diagonalize the Hamiltonian.
Article
Chemistry, Physical
Tommaso Salzillo, Alberto Girlando, Aldo Brillante
Summary: By studying 1-chloro-adamantane and 1-bromo-adamantane, it was found that the Br-derivative exhibits a semiordered structure near ambient conditions, possibly due to reduced rotational disorder compared to other halogen-adamantanes. This semiordered phase is briefly discussed in terms of its Rayleigh Wing and Boson peak.
JOURNAL OF PHYSICAL CHEMISTRY C
(2021)
Article
Physics, Multidisciplinary
Gary Schmiedinghoff, Goetz S. Uhrig
Summary: Open quantum systems and their interactions with the environment are crucial for the development of novel quantum technologies. In this study, the authors generalize the particle conserving generator to non-Hermitian matrices and open quantum systems governed by Lindbladians. The advocated generator demonstrates efficient and accurate flow, outperforming the recently proposed generators by Rosso et al.
Article
Materials Science, Multidisciplinary
Eran Bouchbinder, Edan Lerner, Corrado Rainone, Pierfrancesco Urbani, Francesco Zamponi
Summary: In this study, a newly introduced mean-field model for the density of vibrational states of a structurally disordered system is explored. The investigation focuses on the vibrational properties of the system's ground state at zero temperature. The results show that different types of pseudogaps, from quadratic and delocalized to quartic and localized, emerge based on the parameters set, providing insights into the behavior of disordered systems at glass transition.
Article
Engineering, Manufacturing
Peiqing Liu, Lin Lu, Jikai Liu
Summary: This study developed a design method for shell lattices in CFRC 3D printing, enabling continuous fiber deposition through path planning. The mechanical properties of the lattice were optimized, resulting in improved performance under specific loading conditions. The proposed design method was successfully implemented in CFRC 3D printing.
ADDITIVE MANUFACTURING
(2023)
Article
Astronomy & Astrophysics
Tyler D. Blanton, Stephen R. Sharpe
Summary: This paper discusses the scattering amplitudes of three-particle systems consisting of two identical particles and a different particle, deriving the formalism needed to extract these amplitudes. By using a relativistic formalism and diagrammatic analysis, the spectrum and scattering amplitudes of such systems are studied.
Article
Astronomy & Astrophysics
Matthew J. Dolan, Ayodele Ore
Summary: This study benchmarks the performance of methods for accurate classification at distant mass ranges, with a focus on algorithms that leverage metalearning. The research finds that a simple data augmentation strategy can achieve strong generalization.
Article
Astronomy & Astrophysics
G. Cacciapaglia, A. Deandrea, A. M. Iyer, K. Sridhar
Summary: The Tera-Z phase of future e(+)e(-) colliders FCC-ee and CEPC is a valuable tool for exploring Z portal physics, specifically in studying axionlike particles (ALPs) production. By focusing on composite Higgs models with ALPs, Tera-Z has the capability to probe composite scales up to 100s of TeV, providing constraints on models explaining the muon g - 2 anomaly.
Article
Mechanics
Sean Carey, Ciaran McHale, Paul M. Weaver
Summary: The study introduces a novel variable-topology morphing mechanism to enable a multistable composite cylindrical lattice to transition from linear deployment to curved path deployment without external mechanical input. The behavior of the mechanism and the changing cylindrical lattice are thoroughly characterized through mechanical and virtual tests.
COMPOSITE STRUCTURES
(2021)
Article
Astronomy & Astrophysics
Guoxing Wang, Xiaofeng Xu, Yongqi Xu, Li Lin Yang
Summary: For the first time, a calculation of the complete next-to-leading order corrections to the gg -> ZH process is presented. The method of small mass expansion is used to tackle the challenging two-loop virtual amplitude, taking into account the top quark mass dependence. Reliable numeric results are obtained in all kinematic regions, and phenomenological predictions are provided for the total and differential cross sections at the Large Hadron Collider and its future upgrades. These results are crucial for reducing the theoretical uncertainties and providing theoretical inputs for future precision experimental collider programs.
Article
Physics, Multidisciplinary
Vittorio Penna, Alessandra Contestabile, Andrea Richaud
Summary: In this study, the spatial phase separation of a bosonic mixture in a four-well lattice with ring geometry was investigated using a coherent-state picture. Analytic solutions were obtained for the distribution of boson components in the ring lattice, revealing the architecture of the ground-state phase diagram. The comparison with L-well phase diagrams showed that increasing the number of wells significantly modifies the phase diagram structure and transition mechanisms.
Article
Physics, Multidisciplinary
Zhesen Yang, A. P. Schnyder, Jiangping Hu, Ching-Kai Chiu
Summary: The fermion doubling theorem has been extended to non-Hermitian lattice Hamiltonians, focusing on two-dimensional systems without symmetry constraints. Both Fermi points and exceptional points follow doubling theorems, requiring pairs of point nodes. An invariant called the discriminant number is introduced to prove the doubling theorem for exceptional points.
PHYSICAL REVIEW LETTERS
(2021)
Article
Construction & Building Technology
Yun-Long Chen, Zhao-Yu Wang, Li Ma
Summary: A super-assembly strategy based on the discretization method has been designed to manufacture composite lattice metamaterials, which can assemble various single-and multi-order super-hybrid structures. The rationality and superiority of this strategy have been verified through experiments and analysis. The research results show the promising potential of this strategy for industrial production.
CONSTRUCTION AND BUILDING MATERIALS
(2023)
Article
Chemistry, Physical
A. Rubio-Garcia, D. R. Alcoba, P. Capuzzi, J. Dukelsky
JOURNAL OF CHEMICAL THEORY AND COMPUTATION
(2018)
Article
Chemistry, Physical
Laimutis Bytautas, Jorge Dukelsky
COMPUTATIONAL AND THEORETICAL CHEMISTRY
(2018)
Article
Chemistry, Physical
Diego R. Alcoba, Pablo Capuzzi, Alvaro Rubio-Garcia, Jorge Dukelsky, Gustavo E. Massaccesi, Ofelia B. Ona, Alicia Torre, Luis Lain
JOURNAL OF CHEMICAL PHYSICS
(2018)
Article
Physics, Multidisciplinary
J. E. Garcia-Ramos, J. Dukelsky, P. Perez-Fernandez, J. M. Arias
Article
Chemistry, Physical
A. Rubio-Garcia, J. Dukelsky, D. R. Alcoba, P. Capuzzi, B. Ona, E. Rios, A. Torre, L. Lain
JOURNAL OF CHEMICAL PHYSICS
(2019)
Article
Physics, Multidisciplinary
Sergio Lerma-Hernandez, Alvaro Rubio-Garcia, Jorge Dukelsky
JOURNAL OF PHYSICS A-MATHEMATICAL AND THEORETICAL
(2020)
Article
Chemistry, Physical
Diego R. Alcoba, Ofelia B. Ona, Luis Lain, Alicia Torre, Pablo Capuzzi, Gustavo E. Massaccesi, Elias Rios, Alvaro Rubio-Garcia, Jorge Dukelsky
Summary: This work implements a variational determination of the elements of two-electron reduced density matrices corresponding to the ground and excited states of N-electron interacting systems based on the dispersion operator technique. By extending the proposal to two-particle interaction Hamiltonians and N-representability conditions for the two-, three-, and four-particle reduced density matrices, the treatment is applied to electronic spectra using two benchmark pairing models. The combination of dispersion operator and N-representability conditions up to four-particle reduced density matrices provides excellent results.
JOURNAL OF CHEMICAL PHYSICS
(2021)
Review
Physics, Multidisciplinary
P. Schuck, D. S. Delion, J. Dukelsky, M. Jemai, E. Litvinova, G. Ropke, M. Tohyama
Summary: This review discusses about 20 years of theoretical research utilizing Rowe's equation of motion (R-EOM) method and extended RPA equations in the field of many-body physics for strongly correlated fermions. The main goal is to establish RPA equations with a correlated ground state via EOM, leading to the development of Self-Consistent RPA (SCRPA) which significantly improves upon the standard RPA. The SCRPA method has been successfully applied to various complex problems, demonstrating its efficacy in addressing correlated systems and maintaining key properties of standard RPA.
PHYSICS REPORTS-REVIEW SECTION OF PHYSICS LETTERS
(2021)
Article
Chemistry, Physical
Adan Garros, Diego R. Alcoba, Pablo Capuzzi, Luis Lain, Alicia Torre, Ofelia B. Ona, Jorge Dukelsky
Summary: This paper presents a method for solving the equations of motion in the framework of the doubly occupied configuration interaction space. The resulting algorithms are simpler than traditional methods and can determine excitation energies in N-electron systems at a lower computational cost. This technique only requires knowledge of the elements of low-order reduced density matrices of an N-electron reference state, which can be obtained from any approximate method.
JOURNAL OF CHEMICAL PHYSICS
(2023)
Article
Optics
Alvaro Rubio-Garcia, Angel L. Corps, Armando Relano, Rafael A. Molina, Francisco Perez-Bernal, Jose Enrique Garcia-Ramos, Jorge Dukelsky
Summary: This article studies a model of a quantum spin weakly coupled to a spin-polarized Markovian environment, and discovers a special Liouvillian spectral phase. The exceptional phase is composed of second-order exceptional points, and it leads to a slower evolution that cannot be described by exponential decay. This phase is separated from the normal phase by a critical line.
Article
Materials Science, Multidisciplinary
Will J. Holdhusen, Sergio Lerma-Hernandez, Jorge Dukelsky, Gerardo Ortiz
Summary: By utilizing general symmetry arguments and a many-body invariant, a phase of matter known as a topological SO(5) superfluid is introduced. The study of its quantum phase diagram and correlations reveals exotic superfluid and metallic phases in the repulsive sector. At the critical point, the Hamiltonian reduces to the globally SO(5)-symmetric Gaudin model with quartet states.
Article
Physics, Nuclear
V. V. Baran, J. Dukelsky
Summary: The variational approach based on coupled-cluster and particle-number-projected BCS ansatz accurately describes ground-state pairing correlations in finite fermionic systems, providing a unified picture valid for different coupling strengths and system sizes. This method consistently yields an energy upper bound while operating at the same level of precision as the nonvariational particle-number-projected Bogoliubov-coupled-cluster theory.
Article
Mechanics
G. E. Massaccesi, A. Rubio-Garcia, P. Capuzzi, E. Rios, O. B. Ona, J. Dukelsky, L. Lain, A. Torre, D. R. Alcoba
Summary: This work improves the variational determination of the two-particle reduced density matrix (2-RDM) of N-particle systems by incorporating translational and reflection symmetry reductions, allowing for treatment of larger systems. The method calculates 2-RDM matrix elements by imposing specific constraints and evaluates the physical content by comparing with other simulation methods, demonstrating its effectiveness.
JOURNAL OF STATISTICAL MECHANICS-THEORY AND EXPERIMENT
(2021)
Article
Physics, Multidisciplinary
Sergio Lerma-Hernandez, Jorge Dukelsky, Gerardo Ortiz
PHYSICAL REVIEW RESEARCH
(2019)
Article
Physics, Nuclear
J. E. Garcia-Ramos, J. Dukelsky, P. Perez-Fernandez, J. M. Arias
