1,921 research outputs found
Kink excitation spectra in the (1+1)-dimensional model
We study excitation spectra of BPS-saturated topological solutions -- the
kinks -- of the scalar field model in dimensions, for three
different choices of the model parameters. We demonstrate that some of these
kinks have a vibrational mode, apart from the trivial zero (translational)
excitation. One of the considered kinks is shown to have three vibrational
modes. We perform a numerical calculation of the kink-kink scattering in one of
the considered variants of the model, and find the critical
collision velocity v_{\scriptsize \mbox{cr}} that separates the different
collision regimes: inelastic bounce of the kinks at v_{\scriptsize
\mbox{in}}\ge v_{\scriptsize \mbox{cr}}, and capture at v_{\scriptsize
\mbox{in}}. We also observe escape windows at some
values of v_{\scriptsize \mbox{in}} where the kinks
escape to infinity after bouncing off each other two or more times. We analyse
the features of these windows and discuss their relation to the resonant energy
exchange between the translational and the vibrational excitations of the
colliding kinks.Comment: 20 pages, 14 figures; V2: minor changes to match version published in
JHE
Komunikasi Organisasi: Penerapannya Dalam Pengelolaan Perpustakaan
Tulisan ini berjudul Komunikasi Organisasi: Penerapannya Dalam Pengelolaan Perpustakaan. Bagaimana fungsi komunikasi organisasi dalam pengelolaan perpustakan merupakan permasalahan dalam artikel ini. Makna komunikasi organisasi, fungsi, arah dan bentuk komunikasi organisasi dideskripsikan dalam tulisan ini
Scattering of kinks of the sinh-deformed model
We consider the scattering of kinks of the sinh-deformed model,
which is obtained from the well-known model by means of the
deformation procedure. Depending on the initial velocity of the
colliding kinks, different collision scenarios are realized. There is a
critical value of the initial velocity, which separates the regime of
reflection (at ) and that of a complicated interaction (at
) with kinks' capture and escape windows. Besides that, at
below we observe the formation of a bound state of two
oscillons, as well as their escape at some values of .Comment: 23 pages, 12 figures; v2: minor changes to match version published in
EPJ
Dam Rain and Cumulative Gain
We consider a financial contract that delivers a single cash flow given by
the terminal value of a cumulative gains process. The problem of modelling and
pricing such an asset and associated derivatives is important, for example, in
the determination of optimal insurance claims reserve policies, and in the
pricing of reinsurance contracts. In the insurance setting, the aggregate
claims play the role of the cumulative gains, and the terminal cash flow
represents the totality of the claims payable for the given accounting period.
A similar example arises when we consider the accumulation of losses in a
credit portfolio, and value a contract that pays an amount equal to the
totality of the losses over a given time interval. An explicit expression for
the value process is obtained. The price of an Arrow-Debreu security on the
cumulative gains process is determined, and is used to obtain a closed-form
expression for the price of a European-style option on the value of the asset.
The results obtained make use of various remarkable properties of the gamma
bridge process, and are applicable to a wide variety of financial products
based on cumulative gains processes such as aggregate claims, credit portfolio
losses, defined-benefit pension schemes, emissions, and rainfall.Comment: 25 Pages, 1 Figur
Pendidikan Akhlak Mewujudkan Masyarakat Madani
Islamic education is important role in development and society as a key for continuity in the society. Islamic education in various problem both internally and ekstern required to be able to answer the challenges.There are problems of the value of, as the concept, the credibility gap and idealism.Efforts acceptable solution to this problem is a recipe for the center of islamic education, revitalize education of education and establish a global (International Islamic University) all that is to foster a conducive situation for development of islamic education and goo
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