725 research outputs found

    Lorentz Symmetry Breaking in N=2\mathcal{N} =2 Superspace

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    In this paper, we will study the deformation of a three dimensional theory with N=2\mathcal{N} =2 supersymmetry. This theory will be deformed by the presence of a constant vector field. This deformation will break the Lorentz symmetry. So, we will analyse this theory using N=2\mathcal{N} =2 aether superspace. The N=2\mathcal{N} =2 aether superspace will be obtained from a deformation of the usual N=2\mathcal{N} =2 superspace. This will be done by deforming the generators of the three dimensional N=2\mathcal{N} =2 supersymmetry. After analysing this deformed superalgebra, we will derive an explicit expression for the superspace propagators in this deformed superspace. Finally, we will use these propagators for performing perturbative calculations.Comment: 9 pages, 0 figures, Accepted for publication in EP

    A Case of India and Iran, Political Relationship since Gulf War to 2001

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    Encouraging national interest is the basic objective of foreign policy.  From this view point, this paper tries to analyze the India‘s role in making political relations good with all over the world especially with the Middle East and more specially with Iran. Indo –Iran relations have an evidences of centuries back marked by meaningful interactions. These two Countries share a border till 1947, and they share some common features in their Language, Culture and Traditions. Both regions of South Asia and the Persian Gulf have Powerful political Commercial, Cultural, Energy and people to people links. After independence, India and Iran established diplomatic relations on March 1950. Currently India has two Consulates in Iran, Bandar Abbas and Zahedan. Shah of Iran visited India in March 1956 and also Prime Minister Jawaharlal Nehru visited Iran in September 1959. Prime Minister Smt. Indira Gandhi visited Iran in April 1974 and Prime Minister Shri Moraji Desai visited Iran in June 1977 and again Shah of Iran visited India in February 1978. India was always trying to remain close to the Arab region, and especially with the Gulf, significantly contributing India’s energy requirements, India has always favored a broad-based engagement with the West Asian countries to foster both economic and strategic interests. These two countries made some high level visits to each other’s country for the promotion, development and improvement of their political, economic, and commercial relations. Keywords: bilateral, cultural, Economic relations, Iran, India, high level delegation visits, energy national interest

    A Proof-of-principle for Time-Of-Flight Positron Emission Tomography Imaging

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    Time-Of-Flight (TOF) is a noble technique that is used in Positron Emission Tomography (PET) imaging worldwide. The scintillator based imaging system that is being used around the world for TOF-PET is very expensive. Multi-gap Resistive Plate Chambers (MRPCs) are gaseous detectors which are easy to fabricate, inexpensive and have excellent position and timing resolution. They can be used as a suitable alternative to highly expensive scintillators. For the sole purpose of TOF-PET, a pair of 18 cm ×\times 18 cm, 5 gap, glass-based MRPC modules have been fabricated. Our main aim was to determine the shift in the position of the source (Na-22) with these fabricated MRPCs. In this document, the details of the experimental results will be presented
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