Observing Nucleon Decay in Lead Perchlorate

Lead perchlorate, part of the OMNIS supernova neutrino detector, contains two nuclei, 208Pb and 35Cl, that might be used to study nucleon decay. Both would produce signatures that will make them especially useful for studying less-well-studied neutron decay modes, e.g., those in which only neutrinos are emitted.Comment: 6 pages, 2 figure

An Automatic Invisible Axion In The SUSY Preon Model

It is shown that the recently proposed preon model which provides a unified origin of the diverse mass scale and an explanation of family replication as well as of inter-family mass-hierarchy, possesses a Peccei-Quinn symmetry whose spontaneous breaking leads to an automatic invisible axion. Existence of the PQ-symmetry is simply a consequence of supersymmetry and requirement of minimality in the field-content and interactions, which propose that the lagrangian should possess only those terms which are dictated by the gauge principle and no others. In addition to the axion, the model also generates two superlight Goldstone bosons and their superpartners which are cosmologically safe.Comment: (TeX file) 16 Page

Quark Mixings in SU(6)×SU(2)RSU(6)\times SU(2)_R and Suppression of VubV_{ub}

The quark mixing matrix $V_{CKM}$ is studied in depth on the basis of superstring inspired $SU(6)\times SU(2)_R$ model with global flavor symmetries. The sizable mixings between right-handed down-type quark $D^c$ and colored Higgs field $g^c$ potentially occur but no such mixings in up-type quark sector. In the model the hierarchical pattern of $V_{CKM}$ is understood systematically. It is shown that due to large $D^c$-$g^c$ mixings $V_{ub}$ is naturally suppressed compared to $V_{td}$. It is pointed out that the observed suppression of $V_{ub}$ is in favor of the presence of $SU(2)_R$ gauge symmetry but not in accord with generic SU(5) GUT.Comment: 10pages with no figure, Latex fil

Optimal Controlled Teleportation

We give the analytic expressions of maximal probabilities of successfully controlled teleportating an unknown qubit via every kind of tripartite states. Besides, another kind of localizable entanglement is also determined. Furthermore, we give the sufficient and necessary condition that a three-qubit state can be collapsed to an EPR pair by a measurement on one qubit, and characterize the three-qubit states that can be used as quantum channel for controlled teleporting a qubit of unknown information with unit probability and with unit fidelity.Comment: 4 page

Ground State Property of an Alternating Spin Ladder Involving Two Kinds of Inter-Chain Interactions

The ground state property of the alternating spin ladder is studied in the case that the system involves an antiferromagnetic intra-chain interaction as well as two kinds of inter-chain interactions; one is between spins of the same magnitude and the other is between spins with different magnitudes. The calculation has been carried out by the exact diagonalization method. As a consequence of the competition among interactions, the system is revealed to show an interesting variety of phases in the ground state property. Its phase diagram is exhibited in the parameter space of the system. We find that, however small the total amount of the inter-chain interactions is, the ferrimagnetic ground state becomes unstable in a certain region. In this case, which of the ferrimagnetic and the singlet ground state to appear is determined only by the ratio between the inter-chain interactions regardless of their total amount. The nature of two phases appearing in the singlet region of the phase diagram and the type of the phase transition between them are also discussed. The results are ensured by comparing with those of obtained in other models which are contained in our model as special limiting cases.Comment: 12 pages, 9 PostScript figure

A comparative study of the phase diagrams of spin-121 \over 2 and spin-11 antiferromagnetic chains with dimerization and frustration

We use the density matrix renormalization group method to study the ground state `phase' diagram and some low-energy properties of isotropic antiferromagnetic spin-$1 \over 2$ and spin-$1$ chains with a next-nearest neighbor exchange $J_2 ~$ and an alternation $\delta$ of the nearest neighbor exchanges. In the spin-$1 \over 2$ chain, the system is gapless for $\delta=0$ and $J_2 < J_{2c} =0.241$, and is gapped everywhere else in the $J_2 - \delta$ plane. At $J_{2c}$, for small $\delta$, the gap increases as $\delta^{\alpha}$, where $\alpha = 0.667 \pm 0.001$. $2J_2 + \delta = 1$ is a disorder line. To the left of this line, the structure factor $S(q)$ peaks at $q_{max} = \pi$ (Neel `phase'), while to the right, $q_{max}$ decreases from $\pi$ to $\pi/2$ (spiral `phase') as $J_2$ increases. There is also a `$\uparrow \uparrow \downarrow \downarrow$ phase' for large values of both $J_2$ and $\delta$. In the spin-$1$ case, we find a line running from a gapless point at $(J_2 , \delta) = (0,0.25 \pm 0.01)$ upto a `gapless' point at $(0.73 \pm 0.005,0)$ such that the open chain ground state is four-fold degenerate below the line and is unique above it. There is a disorder line in this case also and it has the same equation as in the spin-$1 \over 2$ case, but the line ends at about $\delta =0.136$. Similar to the spin-$1 \over 2$ case, to the left of this line, the peak in the structure factor is at $\pi$ (Neel `phase'), while to the right of the line, it is at less than $\pi$ (spiral `phase'). For $\delta =1$, the system corresponds to a spin ladder and the system is gapped for all values of the interchain coupling for both spin-$1 \over 2$ and spin-$1$ ladders.Comment: 16 pages in latex; 9 figures available on reques

Non SUSY Unification in Left-Right Models

We explore in a model independent way the possibility of achieving the non supersymmetric gauge coupling unification within left-right symmetric models, with the minimal particle content at the left-right mass scale which could be as low as 1 TeV in a variety of models, and with a unification scale M in the range $10^5$ GeV $< M< 10^{17.7}$ GeV.Comment: 18 pages, Latex file, uses epsf style, four figures. Submitted for publication to Phys. Rev. D on Oct. 13, 199

Towards String Predictions

The aim of superstring phenomenology is to develop the tools and methodology needed to confront string theory with experimental data. The first mandatory task is to find string solutions which reproduce the observable data. The subsequent goal is to extract potential signatures beyond the observable data. Recently, by studying exact flat directions of non-Abelian singlet fields, we demonstrated the existence of free fermionic heterotic-string models in which the $SU(3)\times SU(2)\times U(1)_Y$-charged matter spectrum, just below the string scale, consists solely of the MSSM spectrum. In this paper we study the possibility that the exact flat directions leave a $U(1)_{Z^\prime}$ symmetry unbroken at the Planck scale. We demonstrate in a specific example that such unbroken $U(1)_{Z^\prime}$ is in general expected to be not of the GUT type but of intrinsic stringy origin. We study its phenomenological characteristics and the consequences in the case that $U(1)_{Z^\prime}$ remains unbroken down to low energies. We suggest that observation in forthcoming colliders of a $Z^\prime$, with universal couplings for the two light generations but different couplings for the heavy generation may provide evidence for the $Z_2\times Z_2$ orbifold which underlies the free fermionic models.Comment: 18 pages. Standard Latex. References adde

Partisipasi Politik Masyarakat Pada Pemilihan Walikota Dan Wakil Walikota Manado Tahun 2020 (Studi di Kecamatan Malalayang)

Adapun tujuan penelitian ini adalah Untuk mengetahui tingkat partisipasi politik masyarakat dalam Pemilihan Walikota dan Wakil Walikota Manado di Kecamatan Malalayang Kota Manado Tahun 2020. Partisipasi politik merupakan aspek penting dalam sebuah tatanan negara demokrasi, Sekaligus merupakan ciri khas adanya modernisasi politik.&nbsp; Dalam hubungannya dengan demokrasi, partisipasi politik masyarakat berpengaruh terhadap jalannya suatu pemerintahan.&nbsp; Pada suatu pemilu misalnya partisipasi politik berpengaruh terhadap pengambilan keputusan masyarakat kepada pasangan calon yang terpilih.&nbsp; Setiap masyarakat memiliki pilihan dan kepentingan masing-masing untuk menentukan pilihan mereka dalam pemilu. Dalam pilwako kota manado, partisipasi masyarakat dalam penilihan tersebut tergolong tinggi. Termasuk di kecamatan malalayang namun partisipasi yang tinggi tidak diikuti dengan pengetahun masyarakat tingkat pendidikan politik. Penelitian ini menggunakan metode penelitian kualitatif. Hasil penelitian menunjukkan bahwa Dalam pemilihan walikota dan wakil walikota manado pada tahun 2020, partisipasi masyarakat di Kecamatan Malalayang tergolong tinggi diatas 80%, hal tersebut disebabkan beberapa factor yakni sosialisasi oleh KPU. Pentingnya partisipasi masyarakat menjadikan legitimasi pemimpin lebih besar selain itu pemilihan kepala daerah berjalan dengan baik dan kondusif. &nbsp; Kata Kunci: Partisipasi Politik, Masyarkat, Pilkad

KEPEMIMPINAN KEPALA DESA DALAM MENGHADAPI PANDEMI COVID-19 DI DESA AMONGENA 3 KECAMATAN LANGOWAN TIMUR KABUPATEN MINAHASA

Menghadapi masalah penyebaran covid 19 yang terjadi sekarang ini masyarakat memerlukan peran kepemimpinan yang mumpuni dalam mengatasi kebebalan sebagian masyarakat terhadap penerapan protocol kesehatan. Hal ini juga yang dihadapi oleh desa Amongena 3, dimana masih adanya masyarakat yang tidak menerapkan protokol kesehatan sesuai dengan anjuran pemerintah pusat. Dengan menggunakan metode kualitatif (Juliansyah Noor, 2012) penelitian ini akan mengkaji kepemimpinan Kepala Desa dalam menghadapi pandemi Covid-19 di Desa Amongena 3 Kecamatan Langowan Timur Kabupaten Minahasa. Peran kepemimpinan akan dikaji dengan menggunakan pendekatan yang dikemukakan oleh George R. Terry (dalam Toha, 2007) tentang kepemimpinan. Temuan penelitian menggambarkan terkait dengan, dalam mempengaruhi masyarakat agar menerapkan protokol kesehatan sesuai dengan anjuran pemerintah yang telah ditetapkan, Hukum Tua mengalami hambatan akan kurangnnya kesadaran masyarakat tentang bahayanya virus covid-19. Pemerintah desa berupaya agar masyarakat desa mentaati protokol kesehatan yang ada agar virus Covid-19 tidak menyebar di desa Amongena 3. Jika dilihat kepemimpinan Hukum Tua dirasa cukup baik, dalam hal memotivasi perilaku masyarakat desa Amongena 3 kepala desa menerapkan langkah-langkah yang harus ditaati oleh masyarakat desa Amongena 3 agar masyarakat terhindar dari paparan virun Covid-19 dan virus Covid-19 tidak menyebar di desa Amongena 3. Selain itu Hukum Tua mengupayakan untuk selalu memberikan pengumuman baik di pengeras suara dan acara suka ataupun duka yang ada di desa Amongena 3 guna mempengaruhi masyarakat agar menerapkan protokol kesehatan di segala aktivitas yang akan dilakukan dalam rangka pencegahan penyebaran virus Covid-19 di desa Amongena 3. Kata kunci : Kepemimpinan, Pandemi Covid-19  ABSTRACTFacing the problem of the spread of covid 19 that is happening now, the community needs a capable leadership role in overcoming the ignorance of some people towards the application of health protocols. This is also the case with Amongena 3 village, where there are still people who do not implement health protocols in accordance with the recommendations of the central government. Using a qualitative method (Juliansyah Noor, 2012) this study will examine the leadership of the Village Head in dealing with the Covid-19 pandemic in Amongena 3 Village, East Langowan District, Minahasa Regency. The role of leadership will be studied using the approach proposed by George R. Terry (in Toha, 2007) about leadership. The research findings illustrate that in influencing the community to implement health protocols in accordance with government recommendations that have been set, the Old Law is experiencing obstacles to the lack of public awareness about the dangers of the covid-19 virus. The village government is trying to make the village community obey the existing health protocols so that the Covid-19 virus does not spread in the Amongena village 3. If you look at the leadership of the Old Law, it seems quite good, in terms of motivating the behavior of the Amongena village community, the village head applies steps that must be obeyed by the village community. Amongena 3 village community so that the community is protected from exposure to the Covid-19 virus and the Covid-19 virus does not spread in Amongena 3 village. In addition, the Old Law strives to always give announcements both on loudspeakers and happy and sad events in Amongena 3 village in order to influencing the community to apply health protocols in all activities that will be carried out in order to prevent the spread of the Covid-19 virus in the village of Amongena 3. Keywords: Leadership, Covid-19 Pandemi