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31.
We show that a Hamiltonian reduction of affine Lie superalgebras having bosonic simple roots (such as OSp
) does produce supersymmetric Toda models, with superconformal symmetry being nonlinearly realized for those fields of the Toda system which are related to the bosonic simple roots of the superalgebra. A fermionic b-c system of conformal spin
is a natural ingredient of such models. 相似文献
32.
Arjun Berera 《Pramana》2009,72(1):169-182
This talk presents some recent work that has been done in inflationary cosmology. First a brief review is given of the inflation
scenario and its basic models. After that, one of the main problems in developing inflationary models has been the requirement
of a very flat inflation potential. In solving this problem, supersymmetry has played a major role, and the reasons will be
discussed and a specific example of the SUSY hybrid model will be examined. Some problems introduced by SUSY such as the η and gravitino problems will then be discussed. Then in a different direction, the quintessential inflation model will be
examined as a proposal where a single scalar field plays the role of both the inflaton at early time and the dark energy field
later. The final topic covered is developments in understanding dissipation and particle production processes during the inflationary
phase.
相似文献
33.
Gautam Bhattacharyya 《Pramana》2009,72(1):37-54
In this talk, I shall first discuss the Standard Model Higgs mechanism and then highlight some of its deficiencies making
a case for the need to go beyond the Standard Model (BSM). The BSM tour will be guided by symmetry arguments. I shall pick
up four specific BSM scenarios, namely, supersymmetry, little Higgs, gauge-Higgs unification, and the Higgsless approach.
The discussion will be confined mainly on their electroweak symmetry breaking aspects.
相似文献
34.
This is a summary of the beyond the Standard Model (including model building) working group of the WHEPP-X workshop held at
Chennai from January 3 to 15, 2008.
Participants: Neelima Agarwal, S K Agarwalla, C S Aulakh, A Belyaev, S S Biswal, B Bhattacharjee, G Bhattacharyya, L Calibbi, D Choudhury,
E J Chun, D Das, A De Roeck, N G Deshpande, E Dudas, A Giri, D Grellshceid, R Godbole, S Goswami, M Guchait, M Hirsch, R Kaul,
B Kodrani, M C Kumar, A Kundu, Y Mambrini, P Mathews, B Mellado, R Mohanta, S Mohanty, A Nyffeler, S Pakvasa, M K Parida,
M Passera, C Petridou, S Poddar, P Poulose, A Rajaraman, G Rajasekaran, V Ravindran, Kumar Rao, D P Roy, Probir Roy, K A Saheb,
V H Satheeshkumar, T Schwetz, A Tripathi, R Vaidya and S Vempati 相似文献
35.
George W S Hou 《Pramana》2006,67(5):773-782
There are currently two hints for new physics involving CP violation in b → s transitions: ΔS ≡ S
f − S
J
ϕK
≠ 0, and difference in direct CP asymmetry ΔA
Kπ
≡ A
K+π
0
− A
K+π
−
≠ 0. We explore the two scenarios with a large and unique new CP phase in b ↔ s transitions. Motivated by ΔS ≠ 0, we update on the right-handed strange-beauty squark sb
1R at TeV scale. Motivated by ΔA
Kπ
≠ 0, we explore sequential fourth generation t′ and b′ quarks. Both scenarios can survive constraints such as SM level b → sγ, sll and B
s mixing, and predict sizable CP violation in B
s mixing. The fourth generation picture predicts sizable K
L → π
0
vv. Direct search for sb
R, b′ and t′ at hadronic colliders, such as Tevatron Run II and LHC, can complement further CP violation studies at these machines, as
well as at the future Super B factory. 相似文献
36.
In this paper, we construct the generalized Heisenberg supermagnetic models with two different constraints and investigate the integrability of the super integrable systems. By virtue of the gauge transformation, their corresponding gauge equivalent counterparts are derived, i.e., the super and fermionic mixed derivative nonlinear Schrödinger equations, respectively. 相似文献
37.
Bilinearization and soliton solutions of N=1 supersymmetric coupled dispersionless integrable system
Arifa Mirza 《Journal of Nonlinear Mathematical Physics》2017,24(1):107-115
An N=1 supersymmetric generalization of coupled dispersionless (SUSY-CD) integrable system has been proposed by writing its superfield Lax representation. It has been shown that under a suitable variable transformation, the SUSY-CD integrable system is equivalent to N=1 supersymmetric sine-Gordon equation. A superfield bilinear form of SUSY-CD integrable system has been proposed by using super Hirota operator. Explicit expressions of superfield soliton solutions of SUSY-CD integrable system have been obtained by using the Hirota method. 相似文献
38.
Extending the MSSM with Singlet Higgs and Right Handed Neutrino for the Self-Interacting Dark Matter
In order to meet the requirement of BBN,the right handed neutrino is added to the singlet Higgs sector in the GNMSSM.The spectrum and Feynman rules are calculated.the dark matter pheonomenology is also studied.In case of λ ~ 0,the singlet sector can give perfect explanation of relic abundance of dark matter and small cosmological structure simulations.The BBN constraints on the light mediator can be easily solved by decaying to the right handed neutrino.When the λ_N is at the order of O(0.1),the mass of the mediator can be constrained to several MeV. 相似文献
39.
It is generally believed that the low energy effective theory of the minimal supersymmetric standard model is the type 2 two Higgs doublet model.We will show that the type 1 two Higgs doublet model can also be as the effective of supersymmetry in a specific case with high scale supersymmetry breaking and gauge mediation.If the other electroweak doublet obtain the vacuum expectation value after the electroweak symmetry breaking,the Higgs spectrum is quite different.A remarkable feature is that the physical Higgs boson mass can be 125 GeV unlike in the ordinary models with high scale supersymmetry in which the Higgs mass is generally around 140 GeV. 相似文献
40.
We demonstrate that one can exhaustively determine the n‐bound eigenstates of a Hamiltonian H by constructing a sequence of supersymmetric (SUSY) partner Hamiltonians and invoking a time‐dependent quantum adiabatic switching algorithm for passage from the ground state of one to the other. The ground states of the initial pair H(0) and H(1) are constructed by solving the Riccati equation for the superpotential ?(0) for H(0) and adiabatically switching from the ground state Ψ of H(0) to the ground state Ψ of H(1). The charge operator Q is then used to recover the first excited state Ψ of H(0). The procedure is repeated for the ground states of SUSY pairs H(n + 1) and H(n + 2), and appropriate charge operators lead to the excited states Ψ of H(0) with , thereby exhausting the full eigenspectrum of H(0). The workability of the proposed method is shown with several well‐known examples. © 2011 Wiley Periodicals, Inc. Int J Quantum Chem, 2011 相似文献