Topological Electropoles in 4+1 Dimensional EYMCS Theory

A class of explicit exact solutions of Einstein Yang Mills Chern Simons (EYMCS) theory corresponding to topological solitons carrying non-Abelian topological electric charge is obtained. This verifies a conjecture made in Ref.[1,2] regarding the stabilization of the corresponding charged configurations in the theory without gravity .Comment: 11 pages ,Plain TeX,IOPB/BBSR/94-11. Minor typos in eqns(4),(7), (13a),(13b),(21) correcte

Topological Soliton Multiplets in 4+1 Dimensional YMCS Theory

We generalize our results${}^1$ on charged topological solitons (CTS) in $4+1$ dimensional $SU(3)$ Yang-Mills-Chern-Simons (YMCS) theory to $SU(N)$. The $SU(N)$ multiplet structure of two classes of solitons associated with the maximal embeddings $SU(2)\times U(1)^{N-2}\subset SU(N)$ and $SO(3)\times U(1)^{N-3}\subset SU(N)$ and the vital role of the $SU(N)$ multiplet of topological currents is clarified. In the case of the first embedding one obtains a $^{N}C_{2}-$plet of CTS. In the second, for $N = 3$, one obtains neutral solitons which, though (classically) spinless, have magnetic moments. For $N \geq 4$, after modding out the above mentioned non-particulate feature, one obtains $^{N}C_{3}$ plets of CTS.Comment: (minor semantic changes), 21

Constraining the mixing matrix for Standard Model with four generations: time dependent and semi-leptonic CP asymmetries in Bd0B_d^0, BsB_s and D0D^0

Using existing experimental information from K, B and D decays as well as electroweak precision tests and oblique parameters, we provide constraints and correlations on the parameters of the 4X4 mixing matrix for the Standard Model with four generations (SM4). We emphasize that some correlations amongst the parameters have important repercussions for key observables. We work with a particular representation of this matrix which is highly suited for extracting information from B-decays. Implications of the resulting constraints for time dependent and semileptonic CP asymmetries for $D^0$, $B^0$ and for $B_s$ are also given. While we show that the semi-leptonic asymmetries may be significantly enhanced in SM4 over the SM, there are important constraints and correlations with other observables. In this context we suggest that existing data from B-factories taken on $\Upsilon (4S)$ and $\Upsilon (5S)$, and in the relevant continuum be used to constrain the semi-leptonic asymmetries for $B_d$, $B_s$ as well as their linear combination. Of course, the data from the Tevatron and LHCb experiments can provide non-trivial tests of SM4 as well.Comment: 20 pages, 22 figures, few references and a footnote adde

Hyperhomocysteinemia alters sinoatrial and atrioventricular nodal function : role of the cardiac NMDA receptor.

Introduction: Hyperhomocysteinemia (HHcy) is a pathological condition characterized by excessive levels of plasma homocysteine (Hcy). Patients with HHcy are reported to be at risk for arrhythmias like atrial fibrillation and sudden cardiac death (SCD); however, the causative mechanisms remain unknown. The effects of HHcy on sinus node function, atrioventricular conduction and ventricular vulnerability were investigated by in vivo electrophysiological (EP) analysis, and the role of the cardiac N-methyl-D-aspartate receptor (NMDA-R) in promoting Hcy-induced conduction abnormalities was explored. Materials and Methods: Anesthetized wild-type control mice (WT), mice receiving Hcy in the drinking water for 12 weeks (DW), and heterozygous cystathionine-ß-synthase knockout mice (CBS+/-) were subjected to electrocardiographic (ECG) analysis and programmed electrophysiological (EP) studies. To examine the role of the NMDA-R in eliciting conduction changes in HHcy, animals from the three groups were subjected to paired-design repeat EP studies before and after intraperitoneal injection of magnesium sulfate (MgS04, 20mg/kg), an endogenous blocker of NMDA-R. Another set of studies utilized a specific NMDA-receptor antagonist, dizocilpine (MK-801), in similarly paired-design studies in an acute, intraperitoneal infusion model of HHcy. Expression levels of cardic NMDA-R in all three groups of animals were quantified by immunoblotting, and immunohistochemical identification of cardiac NMDA-Rs at the mouse atrioventricular (A V) junction was undertaken. Results: DW compared to WT had significantly shorter RR, PR, QT, and HV intervals, corrected sinus node recovery times (CSNRT), Wenckebach periodicity (WP), AV nodal effective refractory periods (A VNERP), and right ventricular effective refractory periods (RVERP). No ventricular arrhythmias were induced in either WT or DW. In the paired-design studies, blockade of cardiac NMDA-R with MgS04 had no effect on any ECG or EP variables in WT but significantly prolonged RR, QT, HV, CSNRT, WP, and AVNERP in DW and CBS+/- animals. Immunopositive staining for cardiac NMDA-R at the mouse A V junction was detected. Conclusions: Significant changes in conduction were observed between wild-type mice and mice with diet-induced or genetically-induced hyperhomocysteinemia (HHcy). Low-dose magnesium administration did not alter ECG or EP conduction variables in wildtype mice, but had a profound effect on mice with HHcy. These results suggest that shortened sinoatrial and atrioventricular conduction time in mild HHcy may involve cardiac NMDA-Rs

Proton decay matrix elements with domain-wall fermions

Hadronic matrix elements of operators relevant to nucleon decay in grand unified theories are calculated numerically using lattice QCD. In this context, the domain-wall fermion formulation, combined with non-perturbative renormalization, is used for the first time. These techniques bring reduction of a large fraction of the systematic error from the finite lattice spacing. Our main effort is devoted to a calculation performed in the quenched approximation, where the direct calculation of the nucleon to pseudoscalar matrix elements, as well as the indirect estimate of them from the nucleon to vacuum matrix elements, are performed. First results, using two flavors of dynamical domain-wall quarks for the nucleon to vacuum matrix elements are also presented to address the systematic error of quenching, which appears to be small compared to the other errors. Our results suggest that the representative value for the low energy constants from the nucleon to vacuum matrix elements are given as |alpha| simeq |beta| simeq 0.01 GeV^3. For a more reliable estimate of the physical low energy matrix elements, it is better to use the relevant form factors calculated in the direct method. The direct method tends to give smaller value of the form factors, compared to the indirect one, thus enhancing the proton life-time; indeed for the pi^0 final state the difference between the two methods is quite appreciable.Comment: 56 pages, 17 figures, a comment and two references added in the introduction, typo corrected in Eq.1

A new window on Strange Quark Matter as the ground state of strongly interacting matter

If strange quark matter is the true ground state of matter, it must have lower energy than nuclear matter. Simultaneously, two-flavour quark matter must have higher energy than nuclear matter, for otherwise the latter would convert to the former. We show, using an effective chiral lagrangian, that the existence of a new lower energy ground state for two-flavour quark matter, the pion condensate, shrinks the window for strange quark matter to be the ground state of matter and sets new limits on the current strange quark mass

Einstein's mirror revisited

We describe a simple geometrical derivation of the formula for reflection of light from a uniformly moving plane mirror directly from the postulates of special relativity.Comment: 4 pages, 5 figures, RevTeX4, comments welcome; V2: corrected Fig. 5 and the discussion associated with it, co-author include

Impact of Demonetization on Indian Citizens

A paper currency i.e. currency note is basically a promissory note that simply recommends that the payee has \u27promised\u27 to pay that amount to the payer. The same is written on every currency paper as well. This is authenticated in India by the RBI Governor. This currency notes people can you for the exchange of goods and services. It is considered as a legal tender for performing transactions. Demonetization means the \u27scrapping\u27 of old currency notes and canceling their legal status of tender. Shri Narendra Modi, The Indian Prime Minister, in his speech to the nation on 8th November 2016 declared the demonetization of the Indian currency notes Rs. 1000 and Rs. 500 with effect midnight of 8th November 2016. This move sent the whole country in a wobbly. The Hon\u27ble Prime Minister specified this decision is a decisive attack against the black money being stored by the citizens of the country as well as a step to counter terrorism which was being funded by counterfeit money