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Communications in Theoretical Physics 2015年第6期63卷 761-768页

作者： B.C.Kalita R.Kalita Department of Mathematics Gauhati University

Dust-ion acoustic waves are investigated in this model of plasma consisting of negatively charged dusts, cold ions and inertia less quantum effected electrons with the help of a typical energy integral. In this case, a new technique is applied formulating a differential equation to establish the energy integral in case of multi-component plasmas which is not possible in general. Dust-ion acoustic （DIA） compressive and rarefactive, supersonic and subsonic solitons of various amplitudes are established. The consideration of smaller order nonlinearity in support of the newly established quantum plasma model is observed to generate small amplitude solitons at the decrease of Mach number. The growths of soliton amplitudes and potential depths are found more sensitive to the density of quantum electrons. The small density ratio r（= 1 - f） with a little quantized electrons supplemented by the dust charges Zu and the in-deterministic new quantum parameter C2 are found responsible to finally support the generation of small amplitude solitons admissible for the model.

关键词： dust-acoustic solitary waves quantum effects

Gedanken Experiment for Delineating the Regime for the Start of quantum effects, and Their End, Using Turok’s Perfect Bounce Criteria and Radii of a Bounce Maintaining quantum effects, as Delineated by Haggard and Rovelli

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Journal of High Energy Physics, Gravitation and Cosmology 2016年第3期2卷 287-292页

作者： Andrew Walcott Beckwith Physics Department College of Physics Chongqing University Chongqing China

Haggard and Rovelli delineated an outer radius as to the range of quantum effects, which extends past the Schwartzshield radius. This is defined as 7/3 times the mass of the initial cosmological system. We also have a range of perturbative effects as delineated by Turok’s article which gives a range of values of for which second order perturbative terms in cosmological evolution may play a role, where we have second order perturbation terms for which . Right afterwards, there are no perturbative behavior and no perturbation if . This is the 2nd order term for perturbing term for GW (Gravitational wave) as denoted by , and near the “zero point” of cosmological expansion, and from there we determine the size of the quantum effects, i.e. when they initiate, the relevant initial entropy, so as to determine the radii of initial cosmology, so quantum gravity may initiate its activity, in our toy universe. The criteria of Turok is used to obtain the relevant mass, m, used in the initial radii so that it is 7/3 times the mass of the initial cosmological system. We use the “Criteria of Turok” to delineate the start of quantum gravity effects. Mass m is done via appealing to graviton mass, and that times initial entropy, which is commented upon in Equation (9).

关键词： quantum effects Haggard and Rovelli

Boltzmann Equations with quantum effects (2): Entropy Identity, Existence and Uniqueness of Spatial Decay Solutions

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Tsinghua Science and Technology 2002年第3期7卷 219-222页

作者：张英魁卢旭光 Department of Mathematical Sciences Tsinghua University Beijing 100084 China

A previous study is continued by investigating the Boltzmann equation for particles with quantum effects (BQE). First, the corresponding entropy identity is proved, then if the initial data f(x,v,0) satisfies 0... 详细信息

关键词： Boltzmann equation quantum effects existence uniqueness entropy identity spatial decay

Boltzmann Equations with quantum effects (1):Long Time Behavior of Spatial Decay Solutions

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Tsinghua Science and Technology 2002年第3期7卷 215-218页

作者：张英魁卢旭光 Department of Mathematical Sciences Tsinghua University Beijing 100084 China

The Boltzmann equations for Fermi-Dirac particles and Bose-Einstein particles, both in the absence of external force fields, are combined into a more general form called the Boltzmann equation with quantum effects (BQE). It is assumed that the initial data f(x,v,0) satisfies 0≤f(x,v,0)≤cΦ(x,v,0) for a positive constant c and certain types of control functions Φ(x,v,t). Then within a given function space B(Φ), we prove that f(x+tv,v,t) uniformly converges to f ∞(x,v) in a certain norm where f ∞(x,v)= limt→∞f(x+tv,v,t) and different initial data determines different long time limits.

关键词： Boltzmann equation quantum effects spatial decay solution long time behavior

An Analytical Model of Drain Current for Ultra-Thin Body and Double-Gate Schottky Source/Drain MOSFETs Accounting for quantum effects

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Journal of Semiconductors 2008年第5期29卷 869-874页

作者：栾苏珍刘红侠贾仁需蔡乃琼王瑾匡潜玮西安电子科技大学微电子学院宽禁带半导体材料与器件教育部重点实验室西安710071

A compact drain current including the variation of barrier heights and carrier quantization in ultrathin-body and double-gate Schottky barrier MOSFETs （UTBDG SBFETs） is developed. In this model, Schrodinger＇s equation is solved using the triangular potential well approximation. The carrier density thus obtained is included in the space charge density to obtain quantum carrier confinement effects in the modeling of thin-body devices. Due to the quantum effects, the first subband is higher than the conduction band edge, which is equivalent to the band gap widening. Thus, the barrier heights at the source and drain increase and the carrier concentration decreases as the drain current decreases. The drawback of the existing models,which cannot present an accurate prediction of the drain current because they mainly consider the effects of Schottky barrier lowering （SBL） due to image forces,is eliminated. Our research results suggest that for small nonnegative Schottky barrier （SB） heights,even for zero barrier height, the tunneling current also plays a role in the total on-state currents. Verification of the present model was carried out by the device numerical simulator-Silvaco and showed good agreement.

关键词： Schottky barrier quantum effects the effective mass electron density

quantum gravity effects on spectroscopy of Kerr-Newman black hole in gravity's rainbow

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Communications in Theoretical Physics 2022年第2期74卷 90-98页

作者： Cheng-Zhou Liu Jin-Jun Tao Department of Physics Shaoxing UniversityShaoxing 312000China

The effects of quantum gravity on spectroscopy for the charged rotating gravity’s rainbow are investigated in this *** utilizing an action invariant obtained from particles tunneling through the event horizon,the entropy and area spectrum for the modified Kerr-Newman black hole are *** equally spaced entropy spectrum characteristic of Bekenstein’s original derivation is ***,the entropy spectrum is independent of the energy of the test particles,although the gravity’s rainbow itself is the energy *** that,the quantum gravity effects of gravity’s rainbow has no influence on the entropy *** the other hand,due to the spacetime quantum effects,the obtained area spectrum is different from the original Bekenstein *** is not equidistant and is dependent on the horizon *** that,by analyzing the area spectrum from a specific rainbow function,a minimum area with a Planck scale is derived for the event *** this point,the area quantum is zero and the black hole radiation ***,the black hole remnant for the gravity’s rainbow is obtained from the area *** addition,the entropy for the modified Kerr-Newman black hole is calculated and the quantum correction to the area law is obtained and discussed.

关键词： black hole spectroscopy gravity’s rainbow quantum effects

Nuclear Fusion Within Extremely Dense Plasma Enhanced by quantum Particle Waves

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Plasma Science and Technology 2015年第5期17卷 366-371页

作者：苗峰曾宪俊邓柏权 Southwest University for Nationalities HOPE Innovations Inc. Southwestern Institute of Physics

quantum effects play an enhancement role in p-p chain reactions occurring within stars. Such an enhancement is quantified by a wave penetration factor that is proportional to the density of the participating fuel particles. This leads to an innovative theory for dense plasma, and its result shows good agreement with independent data derived from the solar energy output. An analysis of the first Z-pinch machine in mankind＇s history exhibiting neutron emission leads to a derived deuterium plasma beam density greater than that of water, with plasma velocities exceeding 10000 km/s. Fusion power could be achieved by the intersection of four such pinched plasma beams with powerful head-on collisions in their common focal region due to the beam and target enhanced reaction.

关键词： quantum effects fusion enhancement extremely dense plasma

Effect of spin on the instability of THz plasma waves in field-effect transistors under non-ideal boundary conditions

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Plasma Science and Technology 2023年第12期25卷 24-30页

作者：张丽萍李佳妮冯江旭苏俊燕 School of Sciences Lanzhou University of TechnologyLanzhou 730050People’s Republic of China

Terahertz(THz) radiation can be generated due to the instability of THz plasma waves in field-effect transistors(FETs). In this work, we discuss the instability of THz plasma waves in the channel of FETs with spin and quantum effects under non-ideal boundary conditions. We obtain a linear dispersion relation by using the hydrodynamic equation, Maxwell equation and spin equation. The influence of source capacitance, drain capacitance, spin effects, quantum effects and channel width on the instability of THz plasma waves under the non-ideal boundary conditions is investigated in great detail. The results of numerical simulation show that the THz plasma wave is unstable when the drain capacitance is smaller than the source capacitance;the oscillation frequency with asymmetric boundary conditions is smaller than that under non-ideal boundary conditions;the instability gain of THz plasma waves becomes lower under non-ideal boundary conditions. This finding provides a new idea for finding efficient THz radiation sources and opens up a new mechanism for the development of THz technology.

关键词： the instability of THz plasma waves spin effects non-ideal boundary conditions quantum effects field-effect transistors

Effective-Field Theory on High Spin Systems with Biaxial Crystal Field

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Communications in Theoretical Physics 2006年第6X期46卷 1105-1108页

作者： JIANG Wei GUO An-Bang LI Xin WANG Xi-Kun BAI Bao-Dong College of Sciences Shenyang University of Technology Shenyang 110023 China School of Electrical Engineering Shenyang University of Technology Shenyang 110023 China

Based on the effective-field theory with self-spin correlations and the differential operator technique, physical properties of the spin-2 system with biaxial crystal field on the .simple cubic, body-centered cubic, as well as faced-centered lattice have been studied. The influences of the external longitudinal magnetic field on the magnetization, internal energy, specific heat, and susceptibility have been discussed in detail The phenomenon that the magnetization in the ground state shows quantum effects produced by the biaxial transverse crystal field has been found.

关键词： effective-field theory magnetic properties biaxial crystal field quantum effects

Implication of the Electron Exchange-Correlation on Fully Nonlinear quantum Dust Ion-Acoustic Solitons

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Communications in Theoretical Physics 2016年第1期65卷 73-77页

作者： khireddine mebrouk leila ait gougam mouloud tribeche Plasma Physics Group(PPG) Theoretical Physics Laboratory(TPL)Faculty of PhysicsUniversity of Bab-EzzouarUSTHBB.P.32E1 AliaAlgiers 16111Algeria

We examine the effect of the electron exchange-correlation on weak and arbitrary amplitude quantum dust ion-acoustic(QDIA) *** reduced quantum hydrodynamic(QHD) model is *** out a fully nonlinear analysis,it is found that the effect of the exchange-correlation on the main quantities for solitary-wave propagation can be quite *** particular,it may be noted that the arbitrary amplitude QDIA soliton experiences a spreading as the phenomenon of exchange-correlation becomes ***,our results show that the exchange-correlation effects inhibit the formation of the flat-bottomed solitons and do not favor their *** turns out that exchangecorrelation and quantum diffraction may act concurrently to set up the conditions for the existence of the QDIA solitary *** results complement and provide new insight into our previously published work on this problem.

关键词： quantum effects solitary waves electron exchange-correlation