SQUEEZING AND QUASIPROBABILITIES FOR A TWO-PHOTON JAYNES-CUMMINGS MODEL WITH ATOMIC MOTION

1992 ◽  
Vol 06 (21) ◽  
pp. 3539-3550 ◽  
Author(s):  
AMITABH JOSHI ◽  
SURESH V. LAWANDE
Keyword(s):  
Standard Model ◽  
Comparative Study ◽  
Interaction Time ◽  
Atomic Motion ◽  
Mode Structure ◽  
Field Mode ◽  
Two Photon ◽  
The Standard Model ◽  
Q Function ◽  
Quasiprobability Distribution

We study the squeezing and the quasiprobability distribution Q-function for an extended two-photon Jaynes-Cummings model (JCM) that includes atomic motion and the field mode structure. A comparative study of this model with respect to the standard model (in which the atom is at rest) has been presented here to isolate the effect of limited atom-radiation interaction time.

INTENSITY DEPENDENT COUPLING HAMILTONIAN VIA MULTI-PHOTON INTERACTION IN A KERR MEDIUM

2003 ◽  
Vol 17 (30) ◽  
pp. 5795-5810 ◽  
Author(s):  
R. A. ZAIT
Keyword(s):  
Single Mode ◽  
Kerr Medium ◽  
Cavity Field ◽  
Field Mode ◽  
Atomic Inversion ◽  
Two Photon ◽  
Level Atom ◽  
The One ◽  
Q Function ◽  
Quasiprobability Distribution

We study the dynamics and quantum characteristics of a single two-level atom interacting with a single mode cavity field undergoing a multi-photon processes in the presence of a nonlinear Kerr-like medium. The wavefunctions of the multi-photon system are obtained when the atom starts in the excited and in the ground state. The atomic inversion, the squeezing of the radiation field and the quasiprobability distribution Q-function of the field are discussed. Numerical results for these characteristics are presented when the atom starts in the excited state and the field mode in a coherent state. The influence of the presence and absence of the number operator and the Kerr medium for the one- and two-photon processes on the evolution of these characteristics are analyzed.

GEOMETRIC PHASE AND DISENTANGLEMENT OF A MOVING FOUR-LEVEL ATOM IN THE PRESENCE OF NONLINEAR MEDIUM

2012 ◽  
Vol 10 (01) ◽  
pp. 1250007 ◽  
Author(s):  
NOUR ZIDAN ◽  
S. ABDEL-KHALEK ◽  
M. ABDEL-ATY
Keyword(s):  
System Dynamics ◽  
Geometric Phase ◽  
Nonlinear Medium ◽  
Atomic Motion ◽  
Kerr Medium ◽  
Mode Structure ◽  
Field Mode ◽  
Level Atom

In this paper, we investigate the geometric phase of the field interacting with a moving four-level atom in the presence of Kerr medium. The results show that the atomic motion, the field-mode structure and Kerr medium play important roles in the evolution of the system dynamics. As illustration, we examine the behavior of the geometric phase and entanglement with experimentally accessible parameters. Some new aspects are observed and discussed.

scholarly journals Search for the Standard Model Higgs boson in the two photon decay channel with the ATLAS detector at the LHC

2011 ◽  
Vol 705 (5) ◽  
pp. 452-470 ◽  
Author(s):  
G. Aad ◽  
B. Abbott ◽  
J. Abdallah ◽  
A.A. Abdelalim ◽  
A. Abdesselam ◽  
...  
Keyword(s):  
Higgs Boson ◽  
Standard Model ◽  
Decay Channel ◽  
Atlas Detector ◽  
Standard Model Higgs Boson ◽  
Two Photon ◽  
Photon Decay ◽  
The Standard Model

scholarly journals Tương tác của các boson chuẩn trong mô hình Zee

2021 ◽  
Vol 3 (6) ◽  
pp. 40-43
Author(s):  
Thanh Hùng Hà
Keyword(s):  
Mass Spectrum ◽  
Standard Model ◽  
Higgs Bosons ◽  
Gauge Bosons ◽  
Lepton Flavor ◽  
Two Photon ◽  
The Standard Model

By adding scalars, the Zee model, as standard model byond, has generated masses for the neutrinos. Due to the addition of new scalars, the mass spectrum and physical states of the particles are different from ones of the standard model. Using general Lagrangian, the interactions of gauge bosons with fermions and Higgs bosons are given. These vertices are the basis for the study of decay processes such as: lepton flavor violating Higgs decays, Higgs decays to two photon.

scholarly journals Photonuclear and Two-Photon Interactions at High-Energy Nuclear Colliders

2020 ◽  
Vol 70 (1) ◽  
pp. 323-354
Author(s):  
Spencer R. Klein ◽  
Peter Steinberg
Keyword(s):  
Standard Model ◽  
Nuclear Structure ◽  
Heavy Ions ◽  
High Energy ◽  
Beyond The Standard Model ◽  
Two Photon ◽  
Electromagnetic Interactions ◽  
The Standard Model ◽  
Energy Frontier ◽  
Photon Interactions

Ultraperipheral collisions (UPCs) of heavy ions and protons are the energy frontier for electromagnetic interactions. Both photonuclear and two-photon collisions are studied at collision energies that are far higher than those available elsewhere. In this review, we discuss physics topics that can be addressed with UPCs, including nuclear shadowing, nuclear structure, and searches for physics beyond the Standard Model.

scholarly journals COMPOSITE HIGGS TO TWO PHOTONS AND GLUONS

2011 ◽  
Vol 26 (31) ◽  
pp. 2313-2322 ◽  
Author(s):  
TUOMAS HAPOLA ◽  
FRANCESCO SANNINO
Keyword(s):  
Standard Model ◽  
Gluon Fusion ◽  
Decay Rates ◽  
Decay Process ◽  
Two Photon ◽  
Photon Decay ◽  
Composite Higgs ◽  
The Standard Model ◽  
200 Gev ◽  
Boson Coupling

We introduce a simple framework to estimate the composite Higgs boson coupling to two-photon in technicolor extensions of the standard model. The same framework allows us to predict the composite Higgs to two-gluon process. We compare the decay rates with the standard model ones and show that the corrections are typically of order one. We suggest, therefore, that the two-photon decay process can be used to disentangle a light composite Higgs from the standard model one. We also show that the Tevatron results for the gluon–gluon fusion production of the Higgs either exclude the techniquarks to carry color charges to the 95% confidence level, if the composite Higgs is light, or that the latter must be heavier than around 200 GeV.

scholarly journals A COMPARATIVE STUDY ON B →K*ℓ+ ℓ- AND $B \to K_0^\ast (1430) \ell^+ \ell^-$ DECAYS IN THE SUPERSYMMETRIC MODELS

2011 ◽  
Vol 26 (12) ◽  
pp. 901-911 ◽  
Author(s):  
V. BASHIRY ◽  
M. BAYAR ◽  
K. AZIZI
Keyword(s):  
Standard Model ◽  
Comparative Study ◽  
Scalar Meson ◽  
Branching Ratio ◽  
Mass Region ◽  
P Wave ◽  
Muon Channel ◽  
The Standard Model ◽  
Model Predictions ◽  
Supersymmetric Models

In this paper, we compare the branching ratio and rate difference of electron channel to muon channel of [Formula: see text] and B →K*ℓ+ℓ- decays, where [Formula: see text] is the p-wave scalar meson, in the supersymmetric models. MSSM with R parity is considered since considerable deviation from the standard model predictions can be obtained in B→Xs ℓ-ℓ+. Taking CQ1 and CQ2 about one which is consistent with the B→K*μ+μ- rate at low dileptonic invariant mass region (1 ≤ q2 ≤ 6 GeV 2). It is found that, firstly, the [Formula: see text] decay is measurable at LHC, secondly, in comparison with B →K*ℓ+ ℓ- decay a greater deviation in the [Formula: see text] decay can be seen. Measurement of these observables for the semileptonic rare [Formula: see text], in particular, at low q2 region can give valuable information about the nature of interactions within Standard Model or beyond.

Quantum discord between two moving two-level atoms

Open Physics ◽  
2012 ◽  
Vol 10 (1) ◽  
Author(s):  
Yao-Hua Hu ◽  
Mao-Fa Fang
Keyword(s):  
Quantum Correlation ◽  
Quantum Discord ◽  
Single Mode ◽  
Atomic Motion ◽  
Structure Parameter ◽  
Cavity Field ◽  
Mode Structure ◽  
Field Mode ◽  
The One ◽  
Jc Model

AbstractConsidering a double JC model, this paper investigates the quantum discord dynamics of two isolated moving two-level atoms each interacting with a single-mode thermal cavity field, and studies the effect of the atomic motion and the field-mode structure on quantumdiscord. The results show that, on the one hand the quantum discord evolves periodically with time and the periods are affected by the atomic motion and the field-mode structure; on the other hand, the quantum discord still can capture the quantum correlation between the two atoms when the entanglement is zero. It is interesting to note that the quantum discord can be effectively preserved by controlling the field-mode structure parameter

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