725 research outputs found
Lorentz Symmetry Breaking in Superspace
In this paper, we will study the deformation of a three dimensional theory
with 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 aether
superspace. The aether superspace will be obtained from a
deformation of the usual superspace. This will be done by
deforming the generators of the three dimensional
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
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
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 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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