International Journal of Theoretical Physics Impact Factor & Information

Publisher: Springer Verlag

Journal description

International Journal of Theoretical Physics publishes original research and reviews in theoretical physics and neighboring fields such as mathematics and the biological sciences. Dedicated to the unification of the latest physics research this journal seeks to both map the direction of future research arising from new analytical methods including the latest progress in the use of computers as well as to complement traditional physics research by providing fresh inquiry into quantum measurement theory relativistic field theory and other similarly fundamental areas.

Current impact factor: 1.19

Impact Factor Rankings

2015 Impact Factor Available summer 2015
2013 / 2014 Impact Factor 1.188
2012 Impact Factor 1.086
2011 Impact Factor 0.845
2010 Impact Factor 0.67
2009 Impact Factor 0.688
2008 Impact Factor 0.675
2007 Impact Factor 0.489
2006 Impact Factor 0.389
2005 Impact Factor 0.411
2004 Impact Factor 0.531
2003 Impact Factor 0.476
2002 Impact Factor 0.655
2001 Impact Factor 0.52
2000 Impact Factor 0.598
1999 Impact Factor 0.474
1998 Impact Factor 0.455
1997 Impact Factor 0.448
1996 Impact Factor 0.387
1995 Impact Factor 0.452
1994 Impact Factor 0.345
1993 Impact Factor 0.447
1992 Impact Factor 0.377

Impact factor over time

Impact factor
Year

Additional details

5-year impact 0.82
Cited half-life 8.50
Immediacy index 0.26
Eigenfactor 0.01
Article influence 0.20
Website International Journal of Theoretical Physics website
Other titles International journal of theoretical physics (Online), International journal of theoretical physics
ISSN 0020-7748
OCLC 39501197
Material type Document, Periodical, Internet resource
Document type Internet Resource, Computer File, Journal / Magazine / Newspaper

Publisher details

Springer Verlag

  • Pre-print
    • Author can archive a pre-print version
  • Post-print
    • Author can archive a post-print version
  • Conditions
    • Author's pre-print on pre-print servers such as arXiv.org
    • Author's post-print on author's personal website immediately
    • Author's post-print on any open access repository after 12 months after publication
    • Publisher's version/PDF cannot be used
    • Published source must be acknowledged
    • Must link to publisher version
    • Set phrase to accompany link to published version (see policy)
    • Articles in some journals can be made Open Access on payment of additional charge
  • Classification
    ​ green

Publications in this journal

  • [Show abstract] [Hide abstract]
    ABSTRACT: Recently, Tao et al. (Int. J. Theor. Phys. 52 (6), 1970–1978, 2013) established a representation of density matrix for multipartite quantum system. Moreover, according to this representation of the density matrix for multipartite quantum system, Tao et al. (Int. J. Theor. Phys. 52 (6), 1970–1978, 2013) have presented two necessary criteria for separability of multipartite quantum system of arbitrary dimensions, for example, see Theorem 2.1 and Theorem 2.2. In this Comment, we would like to point out that Theorem 2.2 given by Tao et al. (Int. J. Theor. Phys. 52 (6), 1970–1978, 2013) is incorrect in general.
    International Journal of Theoretical Physics 07/2015; 54(7). DOI:10.1007/s10773-014-2445-6
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    ABSTRACT: In this work, we have considered non-flat FRW universe filled with dark matter (with non-zero pressure) and generalized dark energy (GDE) as motivated by the work of Sharif et al. (Mod. Phys. Lett. A 28, 1350180, 2013). Also the dark matter and the dark energy are considered to be interacting. The energy density, pressure and the EoS of the GDE have been calculated for the interacting scenario. For stability analysis of this model, we have also analyzed the sign of square speed of sound. Next we investigate the correspondence between GDE and different other candidates of dark energies such as DBI-essence, tachyonic field, hessenc and electromagnetic field. Also we have reconstructed the potential functions and the scalar fields in this scenario.
    International Journal of Theoretical Physics 07/2015; 54(7). DOI:10.1007/s10773-014-2441-x
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    ABSTRACT: We theoretically investigate the phenomena of electromagnetically induced grating in a doppler-broadened Λ-type three-level atomic system with the spontaneously generated coherence (SGC) effect enhanced by an incoherence pump. It is found that the model can effectively diffract a weak probe field into high-order direction. We attribute the enhancement of diffraction mainly to the quantum interference resulting from the cross coupling between the two decay pathways. The diffraction efficiency behaves phase and doppler broadening-dependent phenomena, and can be greatly modulated by the SGC effect. Compared to the counter-propagating case, the co-propagating setting is more suitable for the purpose considered in this paper due to the effectiveness of Doppler-free.
    International Journal of Theoretical Physics 07/2015; 54(7). DOI:10.1007/s10773-014-2459-0
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    ABSTRACT: Here we briefly discuss the Einstein-Aether gravity theory by modification of Einstein-Hilbert action. We find the modified Friedmann equations and then we find the effective energy density and pressure for Einstein-Aether gravity sector. These can be treated as dark energy provided some restrictions on the free function F(K), where K is proportional to H 2. Subsequently, we study the correspondence between the effective dark energy coming from Einstein-Aether gravity with other dark energies like k-essence, tachyon, dilaton, hessence and DBI-essence dark energy and construct the scalar field and corresponding scalar potentials which describe the dynamics of the scalar fields graphically. So finally, if the Einstein-Aether gravity behaves like other dark energy models, in this situation, the scalar field increases and potential decreases.
    International Journal of Theoretical Physics 07/2015; 54(7). DOI:10.1007/s10773-014-2427-8
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    ABSTRACT: The effects of smooth confining potential on the linear and nonlinear optical properties are investigated with Gaussian confining potential in Quantum Dots (GQDs). To this end the effective mass approximation, the compact density matrix approach, and iterative method are used to calculate linear and nonlinear Absorption Coefficient (AC) and Refractive Index (RI) change of an electron confined in GQD. The effects of confining potential and radius of GQD and also incident optical intensity have been investigated. The results show that increasing confining potential decreases the refractive index magnitude and shifts the peak values to the higher energy regions. It is also shown that the peak values of absorption coefficient increase by increasing confining potential. Both absorption coefficient and refractive index experience red shift by increasing the size of quantum dot. It is also shown that transition from step potential to Gaussian potential makes AC and RI to experience a blue shift.
    International Journal of Theoretical Physics 07/2015; 54(7). DOI:10.1007/s10773-014-2465-2
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    ABSTRACT: We explain features of two dimensional structures in a precise way, in terms of the non-commutative space which defines these structures. The novel feature here is a fundamental explanation for the FQHE.
    International Journal of Theoretical Physics 07/2015; 54(7). DOI:10.1007/s10773-014-2462-5
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    ABSTRACT: Based on the properties of two-qubit Grover’s quantum search algorithm, we propose two quantum direct communication protocols, including a deterministic secure quantum communication and a quantum secure direct communication protocol. Secret messages can be directly sent from the sender to the receiver by using two-qubit unitary operations and the single photon measurement with one of the proposed protocols. Theoretical analysis shows that the security of the proposed protocols can be highly ensured.
    International Journal of Theoretical Physics 07/2015; 54(7). DOI:10.1007/s10773-014-2466-1
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    ABSTRACT: We demonstrate that a genuine six-atom entangled state can be used to realize the deterministic quantum information splitting of an arbitrary two-atom state in cavity QED. The scheme does not involve Bell-state measurement and is insensitive to both the cavity decay and the thermal field.
    International Journal of Theoretical Physics 07/2015; 54(7). DOI:10.1007/s10773-014-2420-2
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    ABSTRACT: The cosmic expansion history is investigated from the distance indicator and secular redshift drift. Three types of classical kinematics deceleration parameters and jerk parameters are investigated using the redshift drift. They are also compared with the results from current and future type Ia supernova measurements. For the linear and nonlinear models, all these observations favor a recent accelerating expansion, and previous deceleration. In order to determine which kind of data can provide us a model-independent estimation on the cosmic expansion history, we give a method and find that the redshift drift is more stable to explore the expansion history than distance indicator. From the constraints on deceleration factor today q 0, we find that the future redshift drift also has the potential to test the slowing down of cosmic acceleration. For the piecewise model, we find that the redshift drift is more effective to express recent accelerating and previous decelerating expansion in the average sense.
    International Journal of Theoretical Physics 07/2015; 54(7). DOI:10.1007/s10773-014-2472-3
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    ABSTRACT: The present work intends to point out similarities between the theory developed on a (k = 0)−FRW brane embedded in a five dimensional bulk and significant results derived within the Weyl integrable geometry.
    International Journal of Theoretical Physics 07/2015; 54(7). DOI:10.1007/s10773-014-2469-y
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    ABSTRACT: Quantization of the gauge models is significant in theoretical physics. Graphene is magical material of the 21th century, so in this search we have employed the BFT approach to study dynamic of an electron on the Dirac points of graphene. Here we considered the graphene as a constrained system in non-commutative space with second class constraints so its gauge symmetries are broken. In the approach first the phase space is extended then the constraint series and Hamiltonian are rewritten such that the 2nd class constraints are converted to the 1st ones. As result, we introduce a gauge symmetry for moving an electron on the Dirac points of graphene and calculate its partition function.
    International Journal of Theoretical Physics 07/2015; 54(7). DOI:10.1007/s10773-014-2455-4
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    ABSTRACT: One new quantum state called single-mode squeezing and two-mode squeezing repeated role two-mode vacuum state (SMSTMSVT) is constructed by single-mode squeezing operator and two-mode squeezing operator repeated role in two-mode vacuum state. Its squeezing, antibunching effect, violation of Cauchy-Schwartze inequality and entanglement property between two modes are analyzed by the technique of integration with in an ordered product of operators. Unitary transformation of single-mode squeezing and that of two-mode squeezing are utilized in the calculation process. The influences of single-mode squeezing parameter on quantum properties are discussed. The results by numerical calculation show that its squeezing is strengthened with increasing of single-mode squeezing parameter, but its entanglement property and violation of Cauchy-Schwartze inequality are weakened with increasing of single-mode squeezing parameter. On the other hand, its antibunching effect is not influenced by single-mode squeezing parameter, and it always displays bunching effect.
    International Journal of Theoretical Physics 07/2015; 54(7). DOI:10.1007/s10773-014-2451-8
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    ABSTRACT: We propose a scheme for preparing a seven-atom maximally entangled state (Zha et al., J. Phys. A: Math. Theor. 45, 255, 2012) in cavity QED, where the atoms interact simultaneously with the highly detuned single-mode cavity and the strong classical driving field. Thus our scheme is insensitive to both the cavity decay and thermal field.
    International Journal of Theoretical Physics 07/2015; 54(7). DOI:10.1007/s10773-014-2419-8
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    ABSTRACT: We propose an arbitrary controlled-unitary (CU) gate and a simultaneous quantum transmission and teleportation (SQTTP) scheme. The proposed CU gate utilizes photons with cross-Kerr nonlinearities (XKNLs), coherent superposition states (CSSs) and P-homodyne detectors and consists of the consecutive operation of a controlled-path (C-path) gate and a gathering-path (G-path) gate It is almost deterministic and feasible with current technology when strong CSSs and weak XKNLs are employed. Compared with the existing multi-qubit or controlled gates, which utilize XKNLs, coherent states, and X-homodyne detectors, the proposed CU gate can increase the feasibility of experimental realization, and enhance the robustness against the decoherence effect. Based on the CU gate, we present a SQTTP scheme that simultaneously transmits and teleports two unknown states of photons between two parties (Alice and Bob) using path-polarization intra-particle hybrid entanglement (IRHE) by transferring only a single photon. Consequently, it is possible to experimentally implement SQTTP with a certain success probability using the proposed CU gate.
    International Journal of Theoretical Physics 07/2015; 54(7). DOI:10.1007/s10773-014-2448-3
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    ABSTRACT: We demonstrate the controllable generation of entangled coherent states in circuit quantum electrodynamics (circuit QED). In our scheme, the easy integration of solid-state quantum circuit is exploited. In particular, through manipulating the external capacitor or external classical microwave impulse, the coupling between superconducting qubits and cavity can be manipulated, the entanglement effect between qubit and field modes can be enhanced and the decoherence effect can be effectively suppressed. We further discuss the correspondence between quantum entanglement and some non-classical effects such as the squeezing of entangled coherent state field, the anti-buching effect. The results show that the time evolution of the quantum entanglement between field modes is always accompanied by the synchronous changes of certain non-classical effect. When the quantum entanglement reaches maximum, the anti-bunching (or compression effect) almost reaches maximum synchronously. Once entanglement sudden death occurs, the non-classical effects disappear.
    International Journal of Theoretical Physics 07/2015; 54(7). DOI:10.1007/s10773-014-2449-2
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    ABSTRACT: The behaviour of the Landau-Aharonov-Casher system is discussed by showing a case where the external electric field cannot yield the Landau-Aharonov-Casher quantization under the influence of rotating effects in the cosmic string spacetime, but it can yield bound states solutions to the Schrödinger-Pauli equation analogous to having the Landau-Aharonov-Casher system confined to a hard-wall confining potential under the influence of rotating effects and the topology of the cosmic string spacetime (by assuming ω ρ≪1 and neglecting the effects of a gravitational self-force on the particle).
    International Journal of Theoretical Physics 07/2015; 54(7). DOI:10.1007/s10773-014-2418-9
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    ABSTRACT: In this article, we propose a scheme for splitting a three-qubit GHZ state by using the maximally entangled state as the quantum channel. It will be shown that the state receiver can reconstruct the original state of the sender by applying the appropriate unitary operation. The scheme needs some additional classical information and not Bell-basis measurements. Furthermore, this protocol is feasible with the present technique.
    International Journal of Theoretical Physics 07/2015; 54(7). DOI:10.1007/s10773-014-2470-5
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    ABSTRACT: We investigate entanglement dynamics in Lipkin model, where the entanglement properties are characterized by witness operator and spin squeezing parameter. We first obtain operator solutions under the frozen-spin approximation and then calculate witness operator and spin squeezing parameter. They show that the entangled state can be generated and its degree of entanglement can be controlled by adjusting the weight of the one-particle number operator and the weight of the interaction.
    International Journal of Theoretical Physics 07/2015; 54(7). DOI:10.1007/s10773-014-2426-9
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    ABSTRACT: A semiclassical method to determine if the classical limit of a quantum system is chaotic or not, based on Pesin theorem, is presented. The method is applied to a phenomenological Gamow--type model and it is concluded that its classical limit is chaotic.
    International Journal of Theoretical Physics 07/2015; 54(7). DOI:10.1007/s10773-014-2437-6
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    ABSTRACT: We propose a scheme to realize the deterministic quantum teleportation of an arbitrary two-ion state by using a genuine four-ion entangled state in ion-trap systems. The scheme does not involve Bell-state measurements and only needs to make the single-ion measurements. Our scheme is insensitive to both the initial vibrational state and heating, which is of importance in view of experiment.
    International Journal of Theoretical Physics 07/2015; 54(7). DOI:10.1007/s10773-014-2430-0