Schwinger effect of Gaussian correlations in constant electric fields

Wu, Shu-Min; Zeng, Hao‐Sheng

doi:10.1088/1361-6382/ab8601

Cited by 16 publications

(15 citation statements)

References 29 publications

(65 reference statements)

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“…Especially the Eq. (30) shows that the total sum of the physically accessible GTE C(ρ AB I C I ) and the physically inaccessible GTE C(ρ AB I I C I I ) is equal to the initial GTE. The monogamy relations are important for understanding the transfer of quantum information in relativistic spacetime.…”

Section: S(ρ Ab I I Cmentioning

confidence: 98%

“…It is necessary to understand quantum effects in the relativistic framework, because the world is essentially noninertial or/and curved. Recently, quantum entanglement under relativistic settings received much attention [17][18][19][20][21][22][23][24][25][26][27][28][29][30], including the bipartite entanglement for boson fields [17] and fermi fields [18] in the noninertial frames, and the bipartite entanglement in curved spacetime [19][20][21][22][23][24][25][26][27][28][29]. Bipartite entanglement under the joint influence of both environmental noise and Unruh effect [31,32] was also studied.…”

Section: Introductionmentioning

confidence: 99%

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Genuine tripartite nonlocality and entanglement in curved spacetime

Zeng

2022

Eur. Phys. J. C

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We study the genuine tripartite nonlocality (GTN) and the genuine tripartite entanglement (GTE) of Dirac fields in the background of a Schwarzschild black hole. We find that the Hawking radiation degrades both the physically accessible GTN and the physically accessible GTE. The former suffers from “sudden death” at some critical Hawking temperature, and the latter approaches to the nonzero asymptotic value in the limit of infinite Hawking temperature. We also find that the Hawking effect cannot generate the physically inaccessible GTN, but can generate the physically inaccessible GTE for fermion fields in curved spacetime. These results show that on the one hand the GTN cannot pass through the event horizon of black hole, but the GTE do can, and on the other hand the surviving physically accessible GTE and the generated physically inaccessible GTE for fermions in curved spacetime are all not nonlocal. Some monogamy relations between the physically accessible GTE and the physically inaccessible GTE are found.

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Section: S(ρ Ab I I Cmentioning

confidence: 98%

Section: Introductionmentioning

confidence: 99%

Genuine tripartite nonlocality and entanglement in curved spacetime

Zeng

2022

Eur. Phys. J. C

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“…In accordance with Eq. (11), the Bogoliubov relationship between the operators of the in and out modes is…”

Section: Quantization Of Scalar Fields In Expanding Spacetimementioning

confidence: 99%

Quantum correlation between a qubit and a relativistic boson in an expanding spacetime

Wu¹,

Zeng²,

Liu³

2022

Class. Quantum Grav.

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We use the quantum correlation of both logarithmic negativity and mutual information between a qubit and a relativistic boson to analyze the dynamics of Universe expansion. These dynamical quantum correlations can encode the information about underlying spacetime structure, which suggests a promising application in observational cosmology. We find that the dynamics of both logarithmic negativity and mutual information between the qubit and the boson are very similar. They decrease monotonically with the growth of the expansion volume and the expansion rate. Smaller momentum and medium-sized mass of boson are more favourable for extracting the information about history of Universe expansion. The quantum correlation between the qubit and the antiboson however has very different behavior: the logarithmic negativity is always zero and the mutual information can be generated through the expansion of Universe. Smaller momentum and medium-sized mass of antiboson are beneficial for the production of mutual information. Finally, the trigger phenomenon and conservation for mutual information are witnessed.

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“…The two phenomena are closely related and the study of Unruh effect is helpful to understand the Hawking radiation, and to study the thermodynamics and the problem of information loss [10][11][12]. The Unruh effect and Hawking radiation have been extended to different fields, such as free scalar field, free Dirac field and so on [13][14][15][16][17][18][19][20][21][22][23][24][25][26][27][28][29]. In general, quantum steering, quantum entanglement and quantum discord between quantum fields decrease with the increase of observer acceleration, which means that Unruh effect is harmful to quantum resources based on quantum fields.…”

Section: Introductionmentioning

confidence: 99%

Genuine multipartite entanglement subject to the Unruh and anti-Unruh effects

Zeng

Liu

2022

New J. Phys.

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We study the acceleration effect on the genuine tripartite entanglement for one or two accelerated detector(s) coupled to the vacuum field. Surprisingly, we find that the increase and decrease in entanglement have no definite correspondence with the Unruh and anti-Unruh effects. Specifically, Unruh effect can not only decrease but also enhance the tripartite entanglement between detectors; also, anti-Unruh effect can not only enhance but also decrease the tripartite entanglement. We give an explanation of this phenomenon. Finally, we extend the discussion from tripartite to N-partite systems.

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Schwinger effect of Gaussian correlations in constant electric fields

Cited by 16 publications

References 29 publications

Genuine tripartite nonlocality and entanglement in curved spacetime

Genuine tripartite nonlocality and entanglement in curved spacetime

Quantum correlation between a qubit and a relativistic boson in an expanding spacetime

Genuine multipartite entanglement subject to the Unruh and anti-Unruh effects

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