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

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

Open String Amplitudes in Various Gauges

Recently, Schnabl constructed the analytic solution of the open string tachyon. Subsequently, the absence of the physical states at the vacuum was proved. The development relies heavily on the use of the gauge condition different from the ordinary one. It was shown that the choice of gauge simplifies the analysis drastically. When we perform the calculation of the amplitudes in Schnabl gauge, we find that the off-shell amplitudes of the Schnabl gauge is still very complicated. In this paper, we propose the use of the propagator in the modified Schnabl gauge and show that this modified use of the Schnabl gauge simplifies the computation of the off-shell amplitudes drastically. We also compute the amplitudes of open superstring in this gauge.Comment: 23 pages, minor correction

Tipologi Apartemen di Sekitar Fasilitas Pendidikan Kota Bandung dan Jatinangor

TIPOLOGI APARTEMEN DI SEKITAR FASILITAS PENDIDIKAN KOTA BANDUNG DAN JATINANGOR Erisa Weri Nydia, Panji Nusantara Sakti, Eva Nurjanah, Fuji Ratna Mustika Jurusan Teknik Arsitektur, Fakultas Teknik Sipil dan Perencanaan Institut Teknologi Nasional Email: [email protected] ABSTRAK Pembangunan hunian bagi pelajar atau mahasiswa berkembang pesat di sekitar fasilitas pendidikan terutama di kota-kota besar, hal ini menyebabkan keterbatasan lahan hunian tidak sebanding dengan jumlah pendatang, sehingga sasaran baru sektor properti pengembang adalah membangun apartemen sebagai alternatif hunian vertikal kota di sekitar fasilitas pendidikan. Kajian ini bertujuan untuk mengetahui tipologi yang terdapat pada beberapa apartemen yang berlokasi di sekitar fasilitas pendidikan di Kota Bandung dan Jatinangor. Lingkup studi pada kajian ini meliputi dua aspek, yaitu dari aspek arsitektural dan non-arsitektural. Aspek arsitektural membahas tipologi mengenai block plan, denah, unit, fasad, massa bangunan, dan fasilitas umum. Sedangkan dari aspek non-arsitektural membahas mengenai karakteristik penghuni. Metode analisis yang digunakan adalah induktif terhadap tipologi dimana data diklasifikasikan berdasarkan kesamaan karakteristik. Hasil yang didapat adalah terdapat beberapa persamaan dari keempat apartemen yang berlokasi di sekitar fasilitas pendidikan. Ditinjau dari komposisi unitnya, perbandingan komposisi unit studio apartemen yang berlokasi di sekitar fasilitas pendidikan lebih besar dibandingkan apartemen umum. Adapun beberapa fasilitas umum yang sering ditemukan di dalam apartemen yang berlokasi di sekitar fasilitas pendidikan yaitu, kolam renang, minimart, gym, laundry, dan taman. Kata kunci : apartemen, fasilitas pendidikan, tipologi ABSTRACT Residential development for students is growing rapidly around educational facilities, especially in big cities, this has led to limited land occupancy which is not proportional to the number of entrants, it becomes the new target for real estate developers to build apartments as an alternative to residential vertical city around educational facilities. This study aims to determine the typology in some of the apartments which are located around educational facilities in Bandung and Jatinangor. The scope of the study in this research includes two aspects, from the architectural aspects and non-architectural aspects. Architectural aspects discusses the typology of the block plan, floor plans, units, facades, building mass, and public facilities. Meanwhile, from the non-architectural aspect discuss the characteristics of the occupants. The analytical method used is inductive to the typology where data is classified based on similar characteristics. The result is that there is some similarities of the four apartments that is located around educational facilities. Based on composition of the unit, unit composition ratio studio apartment that is located around educational facilities is greater than common apartment. The number of public facilities that are often found inside apartments, such as swimming pool, minimart, gym, laundry, and park. ­

Quantum corrections to the string Bethe ansatz

One-loop corrections to the energy of semiclassical rotating strings contain both analytic and non-analytic terms in the 't Hooft coupling. Analytic contributions agree with the prediction from the string Bethe ansatz based on the classical S-matrix, but in order to include non-analytic contributions quantum corrections are required. We find a general expression for the first quantum correction to the string Bethe ansatz.Comment: 12 pages. Latex. v2: Misprints corrected and references adde

Isolasi Dan Identifikasi Bakteri Pendegradasi Hidrokarbon Yang Berasal Dari Tanah Tercemar Minyak Bumi

Bioremediasi tanah tercemar minyak bumi telah diatur dalam Keputusan Menteri Negara Lingkungan Hidup nomor 128 Tahun 2003. Salah satu faktor yang menentukankeberhasilan penerapan bioremediasi adalah ketersediaan mikroorganisme yang mampu mendegradasi cemaran minyak bumi. Tujuan dari penelitian ini adalah mengisolasi dan mengidentifikasi konsorsium bakteri hidrokarbonklastik dari sampel tanah tercemar minyak bumi yang diperoleh dari Riau dan Bojonegoro. Dari hasil seleksi dan optimasibakteri pada berbagai sampel tanah diperoleh empat isolate/konsorsium bakteri yang mampu mendegradasi minyak bumi, dengan kode konsorsium Ristek122-2.3;Ristek122-5; Ristek122-BN5; 122-Mix. Berdasarkan identifikasi dan uji biokimia, konsorsium bakteri terdiri dari bakteri hidrokarbonoklastik yang mampu menghasilkanbiosurfaktan. Produksi biosurfaktan mampu menurunkan tegangan permukaan sehingga bakteri hidrokarbonoklastik mampu bekerja secara optimal

Mean-field Approach to the Derivation of Baryon Superpotential from Matrix Model

We discuss how to obtain the superpotential of the baryons and mesons for SU(N) gauge theories with N flavour matter fields from matrix integral. We apply the mean-field approximation for the matrix integral. Assuming the planar limit of the self-consistency equation, we show that the result almost agrees with the field theoretical result.Comment: rev2. ref. and related comments included, typos correcte

Exact Mesonic Vacua From Matrix Models

We investigate in detail the structure of mesonic vacua of N=1 U(Nc) supersymmetric gauge theory with Nf flavors from the matrix model. We show that the Witten index from the matrix model calculation agrees with a result from field theoretical analysis. We also discuss the relationship between a diagrammatic summation and direct matrix integration with insertion of a variable changing delta function. Using this formalism, we obtain the quantum moduli space and evidence of the Seiberg duality from the matrix models.Comment: 14 pages, 1 figure, typos corrected and note on the quamtum moduli space adde