EPLPub Date : 2024-04-10DOI: 10.1209/0295-5075/ad31fd
Cheng Zhang, Hao Zhou, Feng Wu, Peng Han, Jisen Shi, Hairong Yang, Cheng Hong, Chuan Shen and Sui Wei
{"title":"One-for-all: Support-free optimized Fourier random phase for real-time multiple kinoforms generation","authors":"Cheng Zhang, Hao Zhou, Feng Wu, Peng Han, Jisen Shi, Hairong Yang, Cheng Hong, Chuan Shen and Sui Wei","doi":"10.1209/0295-5075/ad31fd","DOIUrl":"https://doi.org/10.1209/0295-5075/ad31fd","url":null,"abstract":"Existing optimized random phase (ORAP) approach mainly faces the limitations of fixed supports. Different ORAPs need to be generated for different target images with different support sizes, thus lacking flexibility and severely limiting applicability. This paper proposes a support-free optimized Fourier random phase (SF-OFRAP) approach for non-iterative kinoform generation, which greatly improves the speed and flexibility of generating kinoforms, and can achieve comparable performance to the ORAP approach. The proposed SF-OFRAP approach not only breaks the fixed support constraint of a target image, but can generate kinoforms of target images with different shapes, different positions, etc. with arbitrary supports. Our proposed SF-OFRAP approach can achieve real-time generation of kinoforms for multi-view holographic display using only a single generated SF-OFRAP without the need for additional phase compensation. The SF-OFRAP approach is suitable for real-time holographic display. Experiments verified the superiority of the produced SF-OFRAP over the ORAP method in terms of flexibility and adaptability to multiple different objects in different positions and different shapes using only one kind of these. The experimental results verify the effectiveness and excellent flexibility of SF-OFRAP for video holographic display and multi-view holographic display.","PeriodicalId":11738,"journal":{"name":"EPL","volume":"121 1","pages":""},"PeriodicalIF":1.8,"publicationDate":"2024-04-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140801097","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
EPLPub Date : 2024-04-10DOI: 10.1209/0295-5075/ad31fc
Juyeon Yi
{"title":"Shell game with a quantum pea","authors":"Juyeon Yi","doi":"10.1209/0295-5075/ad31fc","DOIUrl":"https://doi.org/10.1209/0295-5075/ad31fc","url":null,"abstract":"We examine the role of quantum measurement and coherence, considering the shell game with a quantum particle. The game consists of three sites arranged to form a ring geometry and a particle visiting the sites through a unitary evolution. A player selects one of the sites as a target site and wins if the target site contains the particle at a preassigned time. The player has two options for determining win or loss: local and global measurements, which perform projective measurements on the occupancy of the target site and the particle's position, respectively. The game can be played over multiple rounds, and each round begins with the state reached at the end of the previous round. We calculate the probability of winning at each round and the probability of consecutive losses and find that those probabilities have characteristic asymptotes. We obtain the analytic expressions of the asymptote and scrutinize their essential dependence on the measurement options and coherence in the initial ensemble.","PeriodicalId":11738,"journal":{"name":"EPL","volume":"34 1","pages":""},"PeriodicalIF":1.8,"publicationDate":"2024-04-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140801021","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
EPLPub Date : 2024-02-02DOI: 10.1209/0295-5075/ad259e
Subhrajit Modak, Priyam Das, Challenger Mishra, Prasanta K. Panigrahi
{"title":"Chemical oscillation in ultracold chemistry","authors":"Subhrajit Modak, Priyam Das, Challenger Mishra, Prasanta K. Panigrahi","doi":"10.1209/0295-5075/ad259e","DOIUrl":"https://doi.org/10.1209/0295-5075/ad259e","url":null,"abstract":"<jats:title>Abstract</jats:title> We demonstrate the occurrence of oscillatory reactions in the ultra-cold chemistry of atom-molecular Bose-Einstein condensate. Nonlinear oscillations in the mean-field dynamics occur for a specific range of elliptic modulus, giving rise to both in- and out-phase modulations in the atom-molecule population density. The reaction front velocity is found to be controlled by photoassociation, which also regulates the condensate density. Two distinct pair of in-phase bright localized gap solitons are found as exact solutions, existence of one of which necessarily requires a background. Cnoidal atomic density-waves along with a plane wave molecular motion are observed in both attractive and repulsive domains. Role of intra- and inter-species interactions on both existence and stability is explicated in the presence of photoassociation.&#xD;","PeriodicalId":11738,"journal":{"name":"EPL","volume":"8 1","pages":""},"PeriodicalIF":1.8,"publicationDate":"2024-02-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140055218","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
EPLPub Date : 2024-01-31DOI: 10.1209/0295-5075/ad24cb
Bo Yang, Anqi Li, Nuohan Li, Zhiyong Pei, Youcheng Zuo
{"title":"Restoring core-periphery structure of networks","authors":"Bo Yang, Anqi Li, Nuohan Li, Zhiyong Pei, Youcheng Zuo","doi":"10.1209/0295-5075/ad24cb","DOIUrl":"https://doi.org/10.1209/0295-5075/ad24cb","url":null,"abstract":"<jats:title>Abstract</jats:title> Core-periphery structure is commonly observed in diverse real-world networks, where nodes are categorized as core or peripheral nodes by connection patterns. It plays an important role in ensuring potential functionality and intrinsic order in networks. Networks are inevitably suffering from the malicious attacks and random errors, which could lead to the collapse of core-periphery structure, and in turn the performance degradation and even the total instability of network behaviors. Therefore, it is of great significance to rapidly recover such structure after destruction. However, few of the existing work about network have laid emphasis on core-periphery restoration. Here we propose a novel recovery index to characterize and measure the quality for the core-periphery restoration when a disaster happens. Several efficient algorithms guided by our index are devised to provide optimal or near-optimal restoration plans considering both the mesoscale core-periphery structure and global network connectivity. Numerical results are provided to demonstrate the efficacy of our framework that remarkably enhances core-periphery restoration.","PeriodicalId":11738,"journal":{"name":"EPL","volume":"23 1","pages":""},"PeriodicalIF":1.8,"publicationDate":"2024-01-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140054070","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
EPLPub Date : 2024-01-30DOI: 10.1209/0295-5075/ad2432
E. Nicolau, G. Pelegrı́, Juan Polo, A. M. Marques, Andrew J. Daley, J. Mompart, Ricardo Assis Guimaraes-Dias, Veronica Ahufinger
{"title":"Ultracold atoms carrying orbital angular momentum: engineering topological phases in lattices","authors":"E. Nicolau, G. Pelegrı́, Juan Polo, A. M. Marques, Andrew J. Daley, J. Mompart, Ricardo Assis Guimaraes-Dias, Veronica Ahufinger","doi":"10.1209/0295-5075/ad2432","DOIUrl":"https://doi.org/10.1209/0295-5075/ad2432","url":null,"abstract":"<jats:title>Abstract</jats:title> Ultracold atoms carrying Orbital Angular Momentum (OAM) loaded in lattices constitute a promising platform for engineering topological systems either at the single particle limit or in the presence of interactions. In this review, we report recent progress on this topic with the focus on bosons with OAM l = 1 in lattices of coplanar ring potentials, which provide an ideal scenario to realise topological non-trivial phases of matter.&#xD;&#xD;","PeriodicalId":11738,"journal":{"name":"EPL","volume":"1 1","pages":""},"PeriodicalIF":1.8,"publicationDate":"2024-01-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140054367","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
EPLPub Date : 2024-01-29DOI: 10.1209/0295-5075/ad239b
Ying Yu, Fang Han, Qingyun Wang
{"title":"Dynamic modeling of neuromodulation techniques: Towards elaboration and individual specificity","authors":"Ying Yu, Fang Han, Qingyun Wang","doi":"10.1209/0295-5075/ad239b","DOIUrl":"https://doi.org/10.1209/0295-5075/ad239b","url":null,"abstract":"<jats:title>Abstract</jats:title> Neurological disorders place a significant burden on patients, their families, and society, posing immense scientific challenges in terms of treatment and mechanistic research. Neuromodulation involves the application of invasive or non-invasive technologies to externally manipulate the nervous system of the brain, aiming to provide excitatory or inhibitory modulation that can improve abnormal neural activity. In the previous studies, neurodynamic analysis methods have not only provided novel tools for the study of neuromodulation techniques, but also provided new modulation strategies for the diagnosis and treatment of neurological diseases. In this paper, we present a brief overview of the current state of dynamic modeling and analysis for various neuromodulation techniques, including electrical, optical, magnetical, and ultrasonic approaches, and discuss the future prospects of modeling and analysis developments in neuromodulation.","PeriodicalId":11738,"journal":{"name":"EPL","volume":"119 1","pages":""},"PeriodicalIF":1.8,"publicationDate":"2024-01-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140057675","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
EPLPub Date : 2024-01-29DOI: 10.1209/0295-5075/ad239c
Vasilis K. Oikonomou, Pyotr Tsyba, Olga Razina
{"title":"Red or blue tensor spectrum from GW170817-compatible Einstein-Gauss-Bonnet theory: A detailed analysis","authors":"Vasilis K. Oikonomou, Pyotr Tsyba, Olga Razina","doi":"10.1209/0295-5075/ad239c","DOIUrl":"https://doi.org/10.1209/0295-5075/ad239c","url":null,"abstract":"<jats:title>Abstract</jats:title> In this work we shall prove that the tensor spectral index of the&#xD;primordial tensor perturbations for GW170817-compatible&#xD;Einstein-Gauss-Bonnet theories, takes the approximate simplified&#xD;form $n_{mathcal{T}}simeq 2left(-1+frac{1}{lambda(phi)}&#xD;right)epsilon_1$ at leading order, with $lambda (phi)$ being a&#xD;function of the scalar field which depends on the scalar field&#xD;potential and the second derivative of the scalar-Gauss-Bonnet&#xD;coupling $xi''(phi)$. With our analysis we aim to provide a&#xD;definitive criterion for selecting Einstein-Gauss-Bonnet models&#xD;that can provide a blue-tilted inflationary phenomenology, by&#xD;simply looking at the scalar potential and the scalar-Gauss-Bonnet&#xD;coupling. We shall prove this using two distinct approaches and as&#xD;we show the tilt of the tensor spectral index is determined by the&#xD;values of the potential $V(phi)$ and of scalar-Gauss-Bonnet&#xD;coupling at first horizon crossing. Specifically the blue-tilted&#xD;tensor spectral index can occur when $xi''(phi_*)V(phi_*)>0$ at&#xD;first horizon crossing.","PeriodicalId":11738,"journal":{"name":"EPL","volume":"81 1","pages":""},"PeriodicalIF":1.8,"publicationDate":"2024-01-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140054417","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Enhancing relay synchronization in multiplex networks by repulsive relay layer","authors":"Zhouchao Wei, Gokulakrishnan Sriram, Karthikeyan Rajagopal, Sajad Jafari","doi":"10.1209/0295-5075/ad2369","DOIUrl":"https://doi.org/10.1209/0295-5075/ad2369","url":null,"abstract":"<jats:title>Abstract</jats:title> Relay synchronization, which is the interlayer synchronization of two indirectly connected layers, is an important phenomenon in multiplex networks. In this study, relay synchronization is investigated through a triplex network of Hindmarsh-Rose neurons while considering attractive and repulsive intralayer couplings. Relay synchronization is improved when the remote layers have attractive coupling, and the relay layer has repulsive coupling. The essential conditions for the local stability of relay synchronization is found within the framework of master stability function approach. The analytical results are supported by numerical data on synchronization error. Furthermore, enhanced relay synchronization is also shown for larger networks and different internal couplings. Finally, the generalizability of the outcome is confirmed by investigating a triplex network of R\"ossler systems.","PeriodicalId":11738,"journal":{"name":"EPL","volume":"89 1","pages":""},"PeriodicalIF":1.8,"publicationDate":"2024-01-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140054072","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
EPLPub Date : 2024-01-25DOI: 10.1209/0295-5075/ad229d
Rafael L. Junqueira Costa, Rodrigo F. Sobreiro
{"title":"Fermionic quantum gas at finite temperature within a Lorentz violating background","authors":"Rafael L. Junqueira Costa, Rodrigo F. Sobreiro","doi":"10.1209/0295-5075/ad229d","DOIUrl":"https://doi.org/10.1209/0295-5075/ad229d","url":null,"abstract":"<jats:title>Abstract</jats:title> In this work we consider a fermionic quantum gas within a Lorentz-Violating background at finite temperature. We derive the effective action within Path Integral formalism considering the interaction of external electromagnetic field and Lorentz violating background fields with quantum fermions. To introduce the temperature effects, we employ the Matsubara formalism. Comments about the corresponding phenomenology are also made.","PeriodicalId":11738,"journal":{"name":"EPL","volume":"26 1","pages":""},"PeriodicalIF":1.8,"publicationDate":"2024-01-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140054159","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
EPLPub Date : 2024-01-24DOI: 10.1209/0295-5075/ad222c
Giuseppe Luca Celardo, Mattia Angeli, Francesco Mattiotti, Robin Kaiser
{"title":"Localization of light in three dimensions: A mobility edge in the imaginary axis in non-Hermitian Hamiltonians","authors":"Giuseppe Luca Celardo, Mattia Angeli, Francesco Mattiotti, Robin Kaiser","doi":"10.1209/0295-5075/ad222c","DOIUrl":"https://doi.org/10.1209/0295-5075/ad222c","url":null,"abstract":"<jats:title>Abstract</jats:title> Searching for Anderson localization of light in three dimensions has challenged experimental and theoretical research for the last decades. Here the problem is analyzed through large scale numerical simulations, using a radiative Hamiltonian i.e. a non-Hermitian long-range hopping Hamiltonian, well suited to model light-matter interaction in cold atomic clouds. Light interaction in atomic clouds is considered in presence of positional and diagonal disorder. Due to the interplay of disorder and cooperative effects (sub- and super-radiance) a novel type of localization transition is shown to emerge, differing in several aspects from standard localization transitions which occur along the real energy axis. The localization transition discussed here is characterized by a mobility edge along the imaginary energy axis of the eigenvalues which is mostly independent from the real energy value of the eigenmodes. Differently from usual mobility edges it separates extended states from hybrid localized states and it manifest itself in the large moments of the participation ratio of the eigenstates. Our prediction of a mobility edge in the imaginary axis, i.e. depending on the eigenmode lifetime, paves the way to achieve control both in the time and space domain of open quantum systems.","PeriodicalId":11738,"journal":{"name":"EPL","volume":"203 1","pages":""},"PeriodicalIF":1.8,"publicationDate":"2024-01-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140054071","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}