1,130 research outputs found
Perturbative Computation of Glueball Superpotentials for SO(N) and USp(N)
We use the superspace method of hep-th/0211017 to prove the matrix model
conjecture for N=1 USp(N) and SO(N) gauge theories in four dimensions. We
derive the prescription to relate the matrix model to the field theory
computations. We perform an explicit calculation of glueball superpotentials.
The result is consistent with field theory expectations.Comment: 24 pages, 10 figure
On multicurve models for the term structure
In the context of multi-curve modeling we consider a two-curve setup, with
one curve for discounting (OIS swap curve) and one for generating future cash
flows (LIBOR for a give tenor). Within this context we present an approach for
the clean-valuation pricing of FRAs and CAPs (linear and nonlinear derivatives)
with one of the main goals being also that of exhibiting an "adjustment factor"
when passing from the one-curve to the two-curve setting. The model itself
corresponds to short rate modeling where the short rate and a short rate spread
are driven by affine factors; this allows for correlation between short rate
and short rate spread as well as to exploit the convenient affine structure
methodology. We briefly comment also on the calibration of the model
parameters, including the correlation factor.Comment: 16 page
A solution to the hierarchy problem from an almost decoupled hidden sector within a classically scale invariant theory
If scale invariance is a classical symmetry then both the Planck scale and
the weak scale should emerge as quantum effects. We show that this can be
realized in simple scale invariant theories with a hidden sector. The
weak/Planck scale hierarchy emerges in the (technically natural) limit where
the hidden sector decouples from the ordinary sector. The weak scale is
protected from quadratic divergences because of classical scale invariance, so
there is no hierarchy problem.Comment: 10 page
Efisiensi Teknis USAha Tani Padi Petani Peserta dan Petani Nonpeserta Program Sl-ptt di Kabupaten Sukabumi
The objectives of this study were to analyze the influence of farmers\u27 participation in SL-PTT rice program on the technical efficiency of farm businesses run by the farmers. The measurement of technical efficiency was conducted by using Data Envelopment Analysis (DEA) oriented toward the inputs of 35 SL-PTT rice program participants and 35 non-participant farmers of SL-PTT rice program in Cisaat District of Sukabumi Regency, particularly during the harvest season III in 2014. The significant difference of the mean value of technical efficiency between the participant farmers and non-participant farmers of SL-PTT rice program was examined by using t-test (different test). The results show that the average value of technical efficiency for all respondents is 0,83. The average value of the technical efficiency of the participant farmers in SL-PTT rice program (0,84) is higher than that of the non-participant farmers in SL-PTT rice program (0,82). The t-test results also show that the values of technical efficiency between both types of farmers are not significantly different. The development of SL-PTT program can be achieved by improving the delivery methods on the PTT technological information to the participant farmers i.e. by involving farmers who hold a role as progressive farmers to convey information and advice to other farmers
Santon Diprenilasi dari Kayu Akar Garcinia Tetranda Pierre
Garcinia tetranda merupakan salah satu spesies dari famili Clusiaceae yang mengandung senyawa metabolit sekunder. Senyawa golongan santon telah berhasil diisolasi dari fraksi S ekstrak etil asetat kayu akar Garcinia tetranda Pierre. Senyawa golongan santon ini adalah α-mangostin 1 yang berupa padatan kuning dengan titik leleh 173-1740C. Metode isolasi yang digunakan yaitu Kromatografi Cair Vakum (KCV) menggunakan silika gel 60 GF254 dan dielusi dengan peningkatan kepolaran pelarut. Penentuan struktur senyawa dilakukan menggunakan analisis UV, IR, 1H dan 13C NMR, DEPT 135, korelasi HSQC dan HMBC serta dibandingkan dengan literatur
On Exact Superpotentials, Free Energies and Matrix Models
We discuss exact results for the full nonperturbative effective
superpotentials of four dimensional supersymmetric U(N) gauge
theories with additional chiral superfield in the adjoint representation and
the free energies of the related zero dimensional bosonic matrix models with
polynomial potentials in the planar limit using the Dijkgraaf-Vafa matrix model
prescription and integrating in and out. The exact effective superpotentials
are produced including the leading Veneziano-Yankielowicz term directly from
the matrix models. We also discuss how to use integrating in and out as a tool
to do random matrix integrals in the large limit.Comment: 14 pages; v2: typos corrected; v3: the scheme for computing exact
superpotentials including both the Veneziano-Yankielowicz term and all
instanton corrections directly using matrix models is emphasized and
references added, to appear in JHE
Note on Matrix Model with Massless Flavors
In this note, following the work of Seiberg in hep-th/0211234 for the
conjecture between the field theory and matrix model in the case with massive
fundamental flavors, we generalize it to the case with massless fundamental
flavors. We show that with a little modifications, the analysis given by
Seiberg can be used directly to the case of massless flavors. Furthermore, this
new method explains the insertion of delta functions in the matrix model given
by Demasure and Janik in hep-th/0211082.Comment: 10 pages. Type fixed. Remarks adde
Chiral Rings and Anomalies in Supersymmetric Gauge Theory
Motivated by recent work of Dijkgraaf and Vafa, we study anomalies and the
chiral ring structure in a supersymmetric U(N) gauge theory with an adjoint
chiral superfield and an arbitrary superpotential. A certain generalization of
the Konishi anomaly leads to an equation which is identical to the loop
equation of a bosonic matrix model. This allows us to solve for the expectation
values of the chiral operators as functions of a finite number of ``integration
constants.'' From this, we can derive the Dijkgraaf-Vafa relation of the
effective superpotential to a matrix model. Some of our results are applicable
to more general theories. For example, we determine the classical relations and
quantum deformations of the chiral ring of super Yang-Mills theory with
SU(N) gauge group, showing, as one consequence, that all supersymmetric vacua
of this theory have a nonzero chiral condensate.Comment: 67 pages, minor change
Pengaruh Penyuluhan Kesehatan Reproduksi Melalui Media Elektronik Video Terhadap Tingkat Pengetahuan Kesehatan Reproduksi Pada Siswa SMP Negeri 9 Surakarta
Latar Belakang : Dewasa ini, usia remaja adalah usia yang sangat rentan dalam mengalami masalah kesehatan reproduksi. Pengetahuan tentang kesehatan reproduksi sangat diperlukan oleh masyarakat khususnya masa remaja, agar memiliki pengetahuan yang memadai tentang masalah kesehatan reproduksi. Salah satu cara untuk meningkatkan pengetahuan kesehatan reproduksi adalah dengan cara penyuluhan. Penyuluhan dengan media elektronik video adalah salah satu media pendidikan yang efektif karena media elektronik video bergerak dinamis, menggunakan kesan visual dan audio, sehingga dapat memaksimalkan penyerapan
materi penyuluhan yang akan diberikan Tujuan Penelitian : Untuk mengetahui pengaruh penyuluhan kesehatan reproduksi
melalui media elektronik video terhadap tingkat pengetahuan kesehatan reproduksi pada siswa SMP Negeri 9 Surakarta
Metode Penelitian : Penelitian ini menggunakan metode quasi experimental one group pre test-post test design pada 55 responden pada kelas VIII. Responden diberikan kuesioner pre test sebelum penyuluhan, kemudian diberikan kuesioner post test setelah penyuluhan, serta diberikan post test kedua setelah 20 hari penyuluhan. Analisis data dilakukan dengan menggunakan uji friedman. Hasil : Terdapat perbedaan tingkat pengetahuan yang bermakna setelah diberikan penyuluhan (p < 0,05). Nilai rata-rata terendah sebesar 1,02 terdapat pada hasil Pre Test, kemudian dilakukan Post Test dan didapatkan nilai rata-rata sebesar 2,70. Setelah 20 hari perlakuan didapatkan nilai rata-rata 2,28. Kesimpulan : Terdapat pengaruh penyuluhan kesehatan reproduksi melalui media elektronik video terhadap tingkat pengetahuan kesehatan reproduksi pada siswa SMP Negeri 9 Surakarta
Adding flavor to Dijkgraaf-Vafa
We study matrix models related via the correspondence of Dijkgraaf and Vafa
to supersymmetric gauge theories with matter in the fundamental. As in
flavorless examples, measure factors of the matrix integral reproduce
information about R-symmetry violation in the field theory. The models, studied
previously as models of open strings, exhibit a large-M phase transition as the
number of flavors is varied. This is the matrix model's manifestation of the
end of asymptotic freedom. Using the relation to a quiver gauge theory, we
extract the effective glueball superpotential and Seiberg-Witten curve from the
matrix model.Comment: 15 pages, harvmac; improved analysis of the healing of cuts, added
calculation of superpotential, improved referencing and notatio
- …
