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Conformally symmetric wormhole solutions supported by non-commutative geometry in f(Q,T) gravity f(Q,T) 引力非交换几何支持的共形对称虫洞解决方案
IF 3.1 3区 物理与天体物理
Communications in Theoretical Physics Pub Date : 2023-12-15 DOI: 10.1088/1572-9494/ad15fa
Chaitra Chooda Chalavadi, V. Venkatesha, N. Kavya, S. Divya Rashmi
{"title":"Conformally symmetric wormhole solutions supported by non-commutative geometry in f(Q,T) gravity","authors":"Chaitra Chooda Chalavadi, V. Venkatesha, N. Kavya, S. Divya Rashmi","doi":"10.1088/1572-9494/ad15fa","DOIUrl":"https://doi.org/10.1088/1572-9494/ad15fa","url":null,"abstract":"\u0000 This manuscript investigates wormhole solutions within the framework of extended symmetric teleparallel gravity, incorporating non-commutative geometry, and conformal symmetries. To achieve this, we examine the linear wormhole model with anisotropic fluid under Gaussian and Lorentzian distributions. The primary objective is to derive wormhole solutions while considering the influence of the shape function on model parameters under Gaussian and Lorentzian distributions. The resulting shape function satisfies all the necessary conditions for a traversable wormhole. Furthermore, we analyze the characteristics of the energy conditions and provide a detailed graphical discussion of the matter contents via energy conditions. Additionally, we explore the effect of anisotropy under Gaussian and Lorentzian distributions. Finally, we present our conclusions based on the obtained results.","PeriodicalId":10641,"journal":{"name":"Communications in Theoretical Physics","volume":"20 3","pages":""},"PeriodicalIF":3.1,"publicationDate":"2023-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138999859","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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}
引用次数: 0
Finite Dimensional Irreducible Representations of LieSuperalgebra D(2,1；α) 列超代数 D(2,1；α) 的有限维不可还原表征
IF 3.1 3区 物理与天体物理
Communications in Theoretical Physics Pub Date : 2023-12-14 DOI: 10.1088/1572-9494/ad1588
Xi Chen, Wen-Li Yang, xiang mao ding, Yao-Zhong Zhang
{"title":"Finite Dimensional Irreducible Representations of LieSuperalgebra D(2,1；α)","authors":"Xi Chen, Wen-Li Yang, xiang mao ding, Yao-Zhong Zhang","doi":"10.1088/1572-9494/ad1588","DOIUrl":"https://doi.org/10.1088/1572-9494/ad1588","url":null,"abstract":"\u0000 This paper focuses on the finite dimensional irreducible representations of Lie superalgebra D(2, 1; α). We explicitly constructed the finite dimensional representations of the superalgebra D(2,1; α) by using the shift operator and differential operator representations. Unlike ordinary Lie algebra representation, there are typical and atypical representations for most superalgebras. So, it’s typical and atypical representations condition also given. Our results are expected to be useful for the construction of primary fields of the corresponding current superalgebra of D(2,1; α).","PeriodicalId":10641,"journal":{"name":"Communications in Theoretical Physics","volume":"14 1","pages":""},"PeriodicalIF":3.1,"publicationDate":"2023-12-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138973104","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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}
引用次数: 0
Exploring the Shadow of a Rotating Charged ModMax Black Hole 探索旋转带电莫德马克斯黑洞的阴影
IF 3.1 3区 物理与天体物理
Communications in Theoretical Physics Pub Date : 2023-12-14 DOI: 10.1088/1572-9494/ad1583
Khurshid Karshiboev, Farruh Atamurotov, A. Abdujabbarov, Ali Ovgun, Anvar Reyimberganov
{"title":"Exploring the Shadow of a Rotating Charged ModMax Black Hole","authors":"Khurshid Karshiboev, Farruh Atamurotov, A. Abdujabbarov, Ali Ovgun, Anvar Reyimberganov","doi":"10.1088/1572-9494/ad1583","DOIUrl":"https://doi.org/10.1088/1572-9494/ad1583","url":null,"abstract":"\u0000 The research presented in this paper discusses the impact that the parameters of charge ($Q$) and screening factor ($gamma$) have on properties of the horizon and silhouette of rotating charged ModMax black holes which were reviewed in [Eur.~Phys.~J.~C (2022)~82:1155]recently, building upon previous findings in the field. Furthermore, the study explores the behavior of null geodesics, which can help us better understand the apparent shape of the black hole's silhouette, as well as the distortion parameter and approximate radii of the silhouette that are influenced by the aforementioned parameters and there are some values of parameter $Q$ which corresponds to data from EHT. Notably, we explore the distortion parameter and approximate radii of the silhouette, revealing that while an increase in $gamma$ leads to a growth in silhouette radius ($R_s$), it simultaneously reduces the distortion rate ($delta_s$). Conversely, heightened $Q$ charge results in a reduction of $R_s$ accompanied by an increase in $delta_s$. Lastly, the paper analyzes the effects of black hole's parameters on the effective potential and energy emission that the peak of the energy emission rate experiences a decline as the screening factor ($gamma$) increases, while it ascends with higher values of the charge parameter ($Q$).","PeriodicalId":10641,"journal":{"name":"Communications in Theoretical Physics","volume":"7 1","pages":""},"PeriodicalIF":3.1,"publicationDate":"2023-12-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138973021","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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}
引用次数: 0
Electron Vortex Generations in Photoionization of Hydrogen Atoms by Chirped-Circularly-Polarized Attosecond Pulses 啁啾圆偏振阿秒脉冲光电离氢原子过程中的电子涡旋生成
IF 3.1 3区 物理与天体物理
Communications in Theoretical Physics Pub Date : 2023-12-14 DOI: 10.1088/1572-9494/ad1587
Bingshuang Zhang, Xiaoyu Liu, Fengzheng Zhu, L. Jiao, Aihua Liu
{"title":"Electron Vortex Generations in Photoionization of Hydrogen Atoms by Chirped-Circularly-Polarized Attosecond Pulses","authors":"Bingshuang Zhang, Xiaoyu Liu, Fengzheng Zhu, L. Jiao, Aihua Liu","doi":"10.1088/1572-9494/ad1587","DOIUrl":"https://doi.org/10.1088/1572-9494/ad1587","url":null,"abstract":"\u0000 By numerically solving the time-dependent Schrödinger equation and employing the analytical perturbative model, we investigate the chirp-induced electron vortex in the photoionization of hydrogen atoms by a pair of counter-rotating circularly polarized chirped attosecond XUV pulses. We demonstrate that single-photon ionization of hydrogen atoms generates photoelectron momentum distributions (PMDs) with distinct helical vortex structures either with or without a time delay between two counter-rotating circularly polarized laser pulses. These structures are highly sensitive to both the time delay between the pulses and their chirp parameters. Our analytical model reveals that the splitting of vortex spirals is caused by the sign changing of chirp-induced frequency-dependent time delay. We show that to obtain the counterpart of PMD under a pair of counter-rotating circularly polarized chirped pulses, both chirp parameters and ordering of pulses need to be reversed.","PeriodicalId":10641,"journal":{"name":"Communications in Theoretical Physics","volume":"34 12","pages":""},"PeriodicalIF":3.1,"publicationDate":"2023-12-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138970993","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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}
引用次数: 0
Time evolutions of scalar field perturbation in Schwarzschild de-Sitter black hole from sEGB theory 从 sEGB 理论看施瓦兹柴尔德去西特黑洞中标量场扰动的时间演化
IF 3.1 3区 物理与天体物理
Communications in Theoretical Physics Pub Date : 2023-12-07 DOI: 10.1088/1572-9494/ad1326
Cheng Xu, Zhen-Hao Yang, Xiaomei Kuang, Rui-hong Yue
{"title":"Time evolutions of scalar field perturbation in Schwarzschild de-Sitter black hole from sEGB theory","authors":"Cheng Xu, Zhen-Hao Yang, Xiaomei Kuang, Rui-hong Yue","doi":"10.1088/1572-9494/ad1326","DOIUrl":"https://doi.org/10.1088/1572-9494/ad1326","url":null,"abstract":"\u0000 The scalar free black hole could be unstable against the scalar field perturbation when it is coupled to Gauss-Bonnet (GB) invariant in a special form. It is known that the tachyonic instability in this scenario is triggered by the strong enough GB coupling. In this paper, we focus on the time domain analysis of massive scalar field perturbation around the Schwarzschild de-Sitter (SdS) black hole in scalar-Einstein-Gauss-Bonnet (sEGB) gravity. By analyzing the scalar field propagation, we find that the scalar field will finally grow up when the GB coupling is large enough. This could lead to the instability of background black hole. Furthermore, we demonstrate how the mass of the scalar field and the GB coupling strength affect the onset of tachyonic instability.","PeriodicalId":10641,"journal":{"name":"Communications in Theoretical Physics","volume":"43 8","pages":""},"PeriodicalIF":3.1,"publicationDate":"2023-12-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138592233","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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}
引用次数: 0
Quantum gates assisted teleportation in noisy environments: robustness and fidelity improvement 嘈杂环境中的量子门辅助远距传物：鲁棒性和保真度的提升
IF 3.1 3区 物理与天体物理
Communications in Theoretical Physics Pub Date : 2023-12-07 DOI: 10.1088/1572-9494/ad1325
Sajede Harraz, Jiaoyang Zhang, Shuang Cong
{"title":"Quantum gates assisted teleportation in noisy environments: robustness and fidelity improvement","authors":"Sajede Harraz, Jiaoyang Zhang, Shuang Cong","doi":"10.1088/1572-9494/ad1325","DOIUrl":"https://doi.org/10.1088/1572-9494/ad1325","url":null,"abstract":"\u0000 Quantum teleportation as the key strategy for quantum communication requires pure maximally shared entangled states among quantum nodes. In practice, quantum decoherence drastically degrades the shared entanglement during entanglement distribution, which is a serious challenge for the development of quantum networks. However, most of the decoherence control strategies proposed thus far are either resource-intensive or time-consuming. To overcome this obstacle, we enable noise-resistant teleportation through noisy channel with a limited number of qubits and without applying time-consuming weak measurements. We apply a quantum gate control unit consisting of a CNOT and a rotation gate after the original teleportation protocol is accomplished. Furthermore, we demonstrate that the teleportation fidelity of unity is attainable when environment-assisted measurement is added to the proposed teleportation protocol via quantum gates. Moreover, we present an entanglement distribution process by employing the designed quantum gate control unit followed by the deterministic standard teleportation protocol to improve the teleportation fidelity from the perspective of establishing improved shared entanglement. Our performance analysis indicates that the proposed teleportation schemes offer a competitive fidelity and success probability compared to the conventional and a recent weak measurement-based teleportation protocol.","PeriodicalId":10641,"journal":{"name":"Communications in Theoretical Physics","volume":"8 11","pages":""},"PeriodicalIF":3.1,"publicationDate":"2023-12-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138589989","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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}
引用次数: 0
The Dbar-dressing method for the (2+1)-dimensional DJKM equation (2+1)- 维 DJKM 方程的 Dbar-dressing 方法
IF 3.1 3区 物理与天体物理
Communications in Theoretical Physics Pub Date : 2023-12-07 DOI: 10.1088/1572-9494/ad1324
Shifei Sun, Biao Li
{"title":"The Dbar-dressing method for the (2+1)-dimensional DJKM equation","authors":"Shifei Sun, Biao Li","doi":"10.1088/1572-9494/ad1324","DOIUrl":"https://doi.org/10.1088/1572-9494/ad1324","url":null,"abstract":"\u0000 In this work, the (2+1)-dimensional Date-Jimbo-Kashiwara-Miwa (DJKM) equation is studied by means of Dbar-dressing method. A new Dbar problem has been constructed by analyzing the characteristic function and the Green's function of its Lax representation. Based on solving the Dbar equation and choosing the proper spectral transformation, the solution of DJKM equation is constructed. Furthermore, the more general solution of DJKM equation can be also obtained by ensuring the evolution of the time spectral data.","PeriodicalId":10641,"journal":{"name":"Communications in Theoretical Physics","volume":"115 22","pages":""},"PeriodicalIF":3.1,"publicationDate":"2023-12-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138590486","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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}
引用次数: 0
Soliton Resolution and Asymptotic Stability of $N$-soliton Solutions for the Defocusing Kundu-Eckhaus Equation with Nonzero Boundary Conditions 具有非零边界条件的去焦昆杜-埃克豪斯方程的孤子解析和 N$ 孤子解的渐近稳定性
IF 3.1 3区 物理与天体物理
Communications in Theoretical Physics Pub Date : 2023-12-07 DOI: 10.1088/1572-9494/ad1327
Engui Fan
{"title":"Soliton Resolution and Asymptotic Stability of $N$-soliton Solutions for the Defocusing Kundu-Eckhaus Equation with Nonzero Boundary Conditions","authors":"Engui Fan","doi":"10.1088/1572-9494/ad1327","DOIUrl":"https://doi.org/10.1088/1572-9494/ad1327","url":null,"abstract":"\u0000 In this paper, we address interesting soliton resolution, asymptotic stability of $N$-soliton solutions and the Painlev'e asymptotics for the Kundu-Eckhaus(KE) equation with nonzero boundary conditions. The key for proving these results is to establish the formulation of a Riemann-Hilbert (RH) problem associated with the above Cauchy problem and find its connection with RH problem of the defocusing NLS equation. With the $barpartial$-steepest descent method and the results of the defocusing NLS equation, we find complete leading order approximation formulas for the defocusing KE equation on the whole $(x,t)$ half-plane including soliton resolution and asymptotic stability of N-soliton solutions in a solitonic region, Zakharov-Shabat asymptotics in a solitonless region and the Painlev'e asymptotics in two transition regions.","PeriodicalId":10641,"journal":{"name":"Communications in Theoretical Physics","volume":"105 9","pages":""},"PeriodicalIF":3.1,"publicationDate":"2023-12-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138590589","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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}
引用次数: 0
Serial Estimation of Serum Calcium and Ionic Calcium Level for Early Detection of Hypocalcemia After Total/Completion Thyroidectomy. 全甲状腺/全甲状腺切除术后早期检测血清钙和离子钙水平的系列评估。
IF 2.4 3区 物理与天体物理
Communications in Theoretical Physics Pub Date : 2023-12-01 Epub Date: 2023-07-01 DOI: 10.1007/s12070-023-04031-6
Nishi Sonkhya, Shubham Agarwal, Mahaveer Prasad Choudhary, Nishant Gupta
{"title":"Serial Estimation of Serum Calcium and Ionic Calcium Level for Early Detection of Hypocalcemia After Total/Completion Thyroidectomy.","authors":"Nishi Sonkhya, Shubham Agarwal, Mahaveer Prasad Choudhary, Nishant Gupta","doi":"10.1007/s12070-023-04031-6","DOIUrl":"10.1007/s12070-023-04031-6","url":null,"abstract":"<p><p>Hypocalcemia is an important and common complication following thyroid surgery. The development of postoperative hypocalcemia is likely to be multifactorial in nature. Patients with acute hypocalcemia may present with numbness of the distal extremities, circumoral paresthesia, and/or carpopedal spasm, laryngospasm, seizure and arrhythmias. In most cases, post-thyroidectomy hypocalcemia is temporary, but small percentage (0-12%) are permanent. The present study was a 1-year prospective interventional study conducted at tertiary care center, Jaipur, India. Total 42 patients who underwent thyroidectomy were included in study. Evaluation of Serum and Ionic Calcium Level done Preoperatively and Postoperative at 6, 12, 24 and 48 h and patients who develops hypocalcemia symptoms were recorded and data were analyzed. In our study hypocalcemia was seen in 13 (31%) out of 42 subjects. Ionic calcium in 'All patients' gradually decreased from pre operative 1.28 ± 0.04 mmol/l to 1.14 ± 0.08 mmol/l by 24 h. Highest incidence of hypocalcemia was seen in patients who had Total thyroidectomy + neck dissection (83.3%) compared to other type of thyroid surgery. we concluded that post thyroidectomy transient hypocalcemia is a frequent complication. Serial monitoring of calcium levels preoperatively and postoperatively combined with careful monitoring of signs and symptoms of hypocalcemia is an efficient and cost-effective tool to detect early post thyroidectomy hypocalcemia.</p>","PeriodicalId":10641,"journal":{"name":"Communications in Theoretical Physics","volume":"32 1","pages":"3493-3496"},"PeriodicalIF":2.4,"publicationDate":"2023-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10645760/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82178127","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Multiple-quantum-coherence dynamics of spin-1 Bose-Einstein condensate during quantum phase transitions 量子相变过程中自旋-1 玻色-爱因斯坦凝聚态的多量子相干动力学
IF 3.1 3区 物理与天体物理
Communications in Theoretical Physics Pub Date : 2023-11-27 DOI: 10.1088/1572-9494/ad0fd9
Fulin Deng, Peng Xu, Su Yi, Wenxian Zhang
{"title":"Multiple-quantum-coherence dynamics of spin-1 Bose-Einstein condensate during quantum phase transitions","authors":"Fulin Deng, Peng Xu, Su Yi, Wenxian Zhang","doi":"10.1088/1572-9494/ad0fd9","DOIUrl":"https://doi.org/10.1088/1572-9494/ad0fd9","url":null,"abstract":"Multiple quantum coherences are often employed to describe quantum many-body dynamics in nuclear spin systems and recently to characterize quantum phase transitions in trapped ions. Here we investigate the multiple-quantum-coherence dynamics of a spin-1 Bose-Einstein condensate. By adjusting the quadratic Zeeman shift, the condensate exhibits three quantum phases. Our numerical results show that the spectrum of multiple quantum coherence indeed catches the quantum critical points. More importantly, with only a few low-order multiple quantum coherences, the spin-1 condensate exhibits rich signals of the many-body dynamics, beyond conventional observables. Experimental implementation of such a multiple quantum coherence protocol is also discussed.","PeriodicalId":10641,"journal":{"name":"Communications in Theoretical Physics","volume":"25 1","pages":""},"PeriodicalIF":3.1,"publicationDate":"2023-11-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139230639","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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}
引用次数: 0
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