Article
Optics
Ludovic Pricoupenko
Summary: In this study, non-Efimovian N-body resonances are investigated in the regime of a large two-body s-wave scattering length, and a contact model is introduced to describe low-energy bound and quasibound states.
Article
Multidisciplinary Sciences
Jian-Ping Lv, Wanwan Xu, Yanan Sun, Kun Chen, Youjin Deng
Summary: The study focuses on the logarithmic finite-size scaling of the O(n) universality class at the upper critical dimensionality, establishing an explicit scaling form for the free-energy density and conjecturing a two-length behavior for the critical two-point correlation function. Extensive Monte Carlo simulations provide evidence for these predictions, which have practical applications in experimental systems.
NATIONAL SCIENCE REVIEW
(2021)
Article
Astronomy & Astrophysics
A. Corsi, Y. Kubota, J. Casal, M. Gomez-Ramos, A. M. Moro, G. Authelet, H. Baba, C. Caesar, D. Calvet, A. Delbart, M. Dozono, J. Feng, F. Flavigny, J. M. Gheller, J. Gibelin, A. Giganon, A. Gillibert, K. Hasegawa, T. Isobe, Y. Kanaya, S. Kawakami, D. Kim, Y. Kiyokawa, M. Kobayashi, N. Kobayashi, T. Kobayashi, Y. Kondo, Z. Korkulu, S. Koyama, V. Lapoux, Y. Maeda, F. M. Marques, T. Motobayashi, T. Miyazaki, T. Nakamura, N. Nakatsuka, Y. Nishio, A. Obertelli, A. Ohkura, N. A. Orr, S. Ota, H. Otsu, T. Ozaki, V. Panin, S. Paschalis, E. C. Pollacco, S. Reichert, J. Y. Rousse, A. T. Saito, S. Sakaguchi, M. Sako, C. Santamaria, M. Sasano, H. Sato, M. Shikata, Y. Shimizu, Y. Shindoo, L. Stuhl, T. Sumikama, Y. L. Sun, M. Tabata, Y. Togano, J. Tsubota, T. Uesaka, Z. H. Yang, J. Yasuda, K. Yoneda, J. Zenihiro
Summary: The dineutron correlation was studied in three different Borromean nuclei near the neutron dripline. The correlation angle between valence neutrons was found to be largest in the same range of intrinsic momenta, which suggests a connection to the nuclear surface. This result reinforces the prediction of universal dineutron formation in environments with low neutron density, such as the surface of neutron-rich Borromean nuclei.
Article
Physics, Fluids & Plasmas
Alexandre R. Nieto, Jesus M. Seoane, Miguel A. F. Sanjuan
Summary: In this paper, we investigate the destruction of the main Kolmogorov-Arnold-Moser (KAM) islands in two-degree-of-freedom Hamiltonian systems. We find that this destruction occurs through a cascade of period-doubling bifurcations. By conducting a systematic grid search, we identify numerous very small KAM islands (islets) below and above a certain accumulation point. We also study the bifurcations involved in the formation of these islets and classify them into three different types. Furthermore, we demonstrate that similar types of islets appear in generic two-degree-of-freedom Hamiltonian systems and area-preserving maps.
Article
Chemistry, Organic
Jacques Renault, Christelle Bouvry, Jean-Francois Cupif, Jean-Pierre Hurvois
Summary: The syntheses of several alkaloids and nitrogen-containing compounds were described in this study, including N-Boc-coniine (14b), pyrrolizidine (1), 6-coniceine (2), and pyrrolo[1,2a]azepine (3). New C-C bonds in the alpha position relative to the nitrogen atom were formed through alkylation reactions. The pyrrolidine ring was formed in an aqueous medium, while the azepane ring was efficiently formed in N,N-dimethylformamide (DMF) as the solvent, using a 7-exo-tet cyclization process.
JOURNAL OF ORGANIC CHEMISTRY
(2023)
Article
Optics
M. Iskin, A. Keles
Summary: In this paper, a variational approach is used to derive a set of coupled integral equations for the bound states in a multiband Hubbard Hamiltonian with attractive on-site interaction. The derived equations are applied to the one-dimensional sawtooth lattice, revealing the presence of tetramer states and their quasiflat dispersion in a flat band. Density-matrix renormalization-group simulations and exact diagonalization results suggest the presence of larger multimers with lower binding energies for N={4,5,...,10}, potentially without an upper bound on N. These findings have important implications for the understanding of many-body phenomena in flat-band systems.
Article
Materials Science, Multidisciplinary
Quanyu Mei, Kai Ji, Michiel Wouters
Summary: This theoretical study investigates the spatiotemporal correlation of 2D nonequilibrium exciton-polariton systems under incoherent pumping. Short range correlations align with linear theory, while long range correlations exhibit nonlinear scaling behaviors. The coexistence of different correlations and the modification of vortex interactions are key features of 2D EP systems under weak interaction and strong pumping.
Article
Physics, Fluids & Plasmas
Donald G. Ferschweiler, Ryan Blair, Alexander R. Klotz
Summary: Inspired by experiments on topologically linked DNA networks, the connectivity of Borromean networks is investigated, where no two rings share a pairwise-link, but groups of three rings form inseparable triplets. The percolation threshold and dissolution properties of Borromean square lattice networks are studied, finding that the percolation threshold occurs when approximately 60.75% of nodes are occupied. Dissolved Borromean networks yield more isolated loops and fewer isolated triplets per single loop compared to Hopf-linked networks. The simulation results have implications for predicting experiments with Borromean structures produced by synthetic chemistry.
Article
Chemistry, Organic
Li-Long Dang, Ting-Ting Zhang, Tian Chen, Ying Zhao, Chen-Chen Zhao, Francisco Aznarez, Kai-Xin Sun, Lu-Fang Ma
Summary: The controllable construction of intricate metallic supramolecular structures has made significant progress in recent years. In this study, three types of supramolecular architectures were synthesized and their nonradiative photothermal conversion mechanism was investigated, which was observed in both solution and solid states. This research provides insights for the development of novel photothermal materials.
ORGANIC CHEMISTRY FRONTIERS
(2022)
Article
Mathematics, Applied
Juan F. Navarro, Ibrahim Belgharbi, Maria del Carmen Martinez-Belda
Summary: In this paper, we numerically investigate particle escape in two different dynamical systems with the same number of exit channels. The study reveals a previously undetected sequential pattern in the distribution of escape times in the galactic system. It is demonstrated that this pattern is directly linked to the geometry of the stable manifolds to the Lyapunov orbits at the potential openings. Furthermore, the study shows that the different nature of the two systems affects the process of escape due to differences in the geometry of the manifolds to the Lyapunov orbits.
MATHEMATICAL METHODS IN THE APPLIED SCIENCES
(2023)
Article
Materials Science, Multidisciplinary
D. F. Aranguren-Quintero, E. Ramos, J. Silva-Valencia, M. S. Figueira, L. N. Oliveira, R. Franco
Summary: This study explores the temperature-dependent thermoelectric transport properties of semiconductor nanostructures, focusing on the electrical conductance, thermal conductance, and thermopower. By calculating universal thermoelectric transport coefficients, the results are extended to various thermoelectric properties, providing insights through numerical renormalization-group results and experimental data.
Article
Agriculture, Multidisciplinary
John M. Dixon, Jeevika Weerahewa, Jon Hellin, Maria Fay Rola-Rubzen, Jikun Huang, Shalander Kumar, Anup Das, Muhammad Ejaz Qureshi, Timothy J. Krupnik, Kamil Shideed, Mangi L. Jat, P. V. Vara Prasad, Sudhir Yadav, Aamer Irshad, Abdybek Asanaliev, Aigul Abugalieva, Aziz Karimov, Basundhara Bhattarai, Carol Q. Balgos, Fred Benu, Hiroshi Ehara, Jharendu Pant, Jon M. P. Sarmiento, Jonathan C. Newby, Jules Pretty, Hiromi Tokuda, Horst Weyerhaeuser, Larry N. Digal, Lingling Li, Md Abdur Rouf Sarkar, Md Zihadul Abedin, Pepijn Schreinemachers, Quentin Grafton, Ram C. Sharma, Saidjamol Saidzoda, Santiago Lopez-Ridaura, Shuan Coffey, Suan Pheng Kam, Su Su Win, Suwanna Praneetvatakul, Tek Maraseni, Van Touch, Wei-li Liang, Yashpal Singh Saharawat, Jagadish Timsina
Summary: This study assessed the effects of COVID-19 on Asian agriculture and food systems and found that the resilience of farming and food systems was strengthened by inherent system characteristics and government policies prioritizing staple food production and distribution. Efforts to improve resilience should be central to recovery programmes in order to mitigate risks from future zoonoses and institutional vulnerabilities revealed by the pandemic.
AGRICULTURAL SYSTEMS
(2021)
Article
Chemistry, Multidisciplinary
Dipankar Panigrahi, Munmun Mondal, Rohit Gupta, Ganesan Mani
Summary: This article reports a new method for the synthesis of phosphonite compounds and transition metal complexes, and verifies its importance through the study of the structures of the products and catalytic reactions.
Article
Physics, Multidisciplinary
M. T. Yamashita, T. Frederico, Lauro Tomio
Summary: This study investigates a three-atom molecule AAB formed by two identical bosons A and a distinct one B by considering coupled channels near a Feshbach resonance. The effective three-body interaction is revealed when the trap setup is tuned to vanishing scattering lengths. By introducing finite parameters and the energy gap, the s-wave transition matrix for the AA subsystem is obtained.
BRAZILIAN JOURNAL OF PHYSICS
(2021)
Article
Optics
Douglas F. C. A. Silva, Massimo Ostilli, Carlo Presilla
Summary: The ground-state energy of noninteracting fermions confined in a D-dimensional region is not dependent on the potential V under certain conditions. This universality property holds for various scenarios, including bounded and unbounded states, and extends to thermal states. Furthermore, it draws an interesting analogy between Anderson's orthogonality catastrophe and first-order quantum phase transitions.
Article
Optics
S. E. Rasmussen, A. S. Jensen, D. V. Fedorov
JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS
(2018)
Article
Optics
J. H. Sandoval, F. F. Bellotti, M. T. Yamashita, T. Frederico, D. V. Fedorov, A. S. Jensen, N. T. Zinner
JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS
(2018)
Article
Optics
F. S. Moller, D. Fedorov, A. S. Jensen, N. T. Zinner
JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS
(2019)
Article
Optics
D. S. Rosa, T. Frederico, G. Krein, M. T. Yamashita
JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS
(2019)
Article
Physics, Multidisciplinary
M. T. Yamashita
Article
Physics, Multidisciplinary
T. Frederico, W. de Paula, A. Delfino, M. T. Yamashita, Lauro Tomio
Article
Physics, Multidisciplinary
Lai Hnin Phyu, H. Moriya, W. Horiuchi, K. Iida, K. Noda, M. T. Yamashita
PROGRESS OF THEORETICAL AND EXPERIMENTAL PHYSICS
(2020)
Article
Physics, Multidisciplinary
Lai Hnin Phyu, H. Moriya, W. Horiuchi, K. Iida, K. Noda, M. T. Yamashita
Summary: This study investigates the Coulomb screening effects on the energy shift of the Hoyle state in a thermal plasma environment, which contributes to the synthesis of C-12 in a burning star. The findings show that despite not depending on specific models, the energy shift follows a simple estimation in a plasma consisting of electrons and alpha particles.
Article
Physics, Multidisciplinary
Lauro Tomio, T. Frederico, V. S. Timoteo, M. T. Yamashita
Summary: In this paper, we revisit the influence of Weinberg's ideas in Nuclear Physics on our own work and discuss the development of a renormalization group invariant framework within the quantum mechanical few-body problem. We update the discussion on relevant scales in the limit of short-range interactions and revise the formulation of subtracted scattering equations and fixed-point Hamiltonians for few-body systems with point-like singularities. The revised approach is illustrated by considering two-nucleons described by singular interactions. The extension of the renormalization formalism to three-body systems is also included, followed by an updated discussion on the applications to four particles.
Article
Optics
D. S. Rosa, T. Frederico, G. Krein, M. T. Yamashita
Summary: In this study, we analytically solved the three-body mass-imbalanced problem with zero-range resonantly interacting particles in D dimensions. By applying the Bethe-Peierls boundary conditions for zero-energy two-body bound states in D dimensions, we derived the negative energy eigenstates of the three-body Schrodinger equation. The solution exhibits an Efimov-like discrete scaling factor dependence on dimension. The analytical form of the mass-imbalanced three-body bound-state wave function can be utilized to explore the effective dimension of asymmetric cold atomic traps near the Efimov limit for Feshbach resonances.
Article
Optics
Lucas Madeira, Tobias Frederico, Stefano Gandolfi, Lauro Tomio, Marcelo T. Yamashita
Summary: Researchers proposed an energy scaling function to predict the energy of bosonic trimers, validated by quantum Monte Carlo calculations. Depending on scattering length, effective range, and a reference energy, this scaling function can probe Efimov physics.
Article
Physics, Multidisciplinary
M. T. Yamashita, T. Frederico, Lauro Tomio
Summary: This study investigates a three-atom molecule AAB formed by two identical bosons A and a distinct one B by considering coupled channels near a Feshbach resonance. The effective three-body interaction is revealed when the trap setup is tuned to vanishing scattering lengths. By introducing finite parameters and the energy gap, the s-wave transition matrix for the AA subsystem is obtained.
BRAZILIAN JOURNAL OF PHYSICS
(2021)
Proceedings Paper
Quantum Science & Technology
D. S. Rosa, M. T. Yamashita, G. Krein, A. S. Jensen
RECENT PROGRESS IN FEW-BODY PHYSICS
(2020)
Article
Optics
M. A. Shalchi, M. T. Yamashita, T. Frederico, Lauro Tomio
Article
Optics
M. A. Shalchi, M. T. Yamashita, M. R. Hadizadeh, E. Garrido, Lauro Tomio, T. Frederico