Constrained superfields from an anti-D3-brane in KKLT

The KKLT construction of dS vacua relies on an uplift term that arises from an anti-D3-brane. It was argued by Kachru, Pearson and Verlinde that this anti-D3-brane is an excited state in a supersymmetric theory since it can decay to a supersymmetric ground state. Hence the anti-D3-brane breaks supersymmetry spontaneously and one should be able to package all the world-volume fields on the anti-D3-brane into a four dimensional $\cal{N}=1$ supersymmetric action. Here we extend previous results and identify the constrained superfields that correspond to all the degrees of freedom on the anti-D3-brane. In particular, we show explicitly that the four 4D worldvolume spinors give rise to constrained chiral multiplets $S$ and $Y^i$, $i=1,2,3$ that satisfy $S^2=SY^i=0$. We also conjecture (and provide evidence in a forthcoming publication) that the vector field $A_\mu$ and the three scalars $\phi^i$ give rise to a field strength multiplet $W_\alpha$ and three chiral multiplets $H^i$ that satisfy the constraints $S W_\alpha= \bar{D}_{\dot \alpha} (S \bar H^i)=0$. This is the first time that such constrained multiplets appear in string theory constructions.Comment: 20 pages, v2: references adde

Efficiently Parsable Extensions to Tree-Local Multicomponent TAG

Recent applications of Tree-Adjoining Grammar (TAG) to the domain of semantics as well as new attention to syntactic phenomena have given rise to increased interested in more expressive and complex multicomponent TAG formalisms (MCTAG). Although many constructions can be modeled using tree-local MCTAG (TL-MCTAG), certain applications require even more flexibility. In this paper we suggest a shift in focus from constraining locality and complexity through tree- and set-locality to constraining locality and complexity through restrictions on the derivational distance between trees in the same tree set in a valid derivation. We examine three formalisms, restricted NS-MCTAG, restricted Vector-TAG and delayed TL-MCTAG, that use notions of derivational distance to constrain locality and demonstrate how they permit additional expressivity beyond TL-MCTAG without increasing complexity to the level of set local MCTAG.Engineering and Applied Science

PEMBUATAN PROTOTIPE OTOMATISASI PENGOLAHAN DATA KAFE DAN KARAOKE BERBASIS MIKROKONTROLER AVR

Karaoke and café are places which often be visited by customer. This places are very busy and potentially robbing can be happenned. To manage karaoke and café easier it is neededautomation, so it can work effective and efficient. The objective of this final project report isto make a managing automation prototype of Karaoke and café data based on AVR microcontroller. A managing automation prototype of Karaoke and café data based on AVR microcontroller has been made. Generally detection of managing automation prototype of Karaoke and café data based on AVR microcontroller has designed use 16/32 Atmega, LCD, 4x4 keypad, DC motor, L293D IC, and push button. For ordering prototype, microcontroller receives input from keypad, than the result of microcontroller process will show by LCD output and seven segments. For automatic order serving, microcontroller receives input from push button, than microcontroller output becomes L293D IC input. The L293D IC outputs control DC motor. At door security, microcontroller processeson LCD output and IC L293D, IC L293D control DC motor. At billing karaoke, microcontroller receives input from the push button, and outputwill be displayed as seven segments. This prototype makes managing karaoke and cafe easier, save the time and energy. It can be concluded that m anaging automation prototype of karaoke and café data based on AVR microcontroller can be used as real managing automation prototype of karaoke and café data

Effective action for the field equations of charged black holes

In this article, we consistently reduce the equations of motion for the bosonic N = 2 supergravity action, using a multi-centered black hole ansatz for the metric. This reduction is done in a general, non-supersymmetric setup, in which we extend concepts of BPS black hole technology. First of all we obtain a more general form of the black hole potential, as part of an effective action for both the scalars and the vectors in the supergravity theory. Furthermore, we show that there are extra constraints specifying the solution, which we calculate explicitly. In the literature, these constraints have already been studied in the one-center case. We also show that the effective action we obtain for non-static metrics, can be linked to the "entropy function" for the spherically symmetric case, as defined by Sen and Cardoso et al.Comment: 18 pages, (v2: small corrections, version to be published in CQG

Fractional branes, warped compactifications and backreacted orientifold planes

The standard extremal p-brane solutions in supergravity are known to allow for a generalisation which consists of adding a linear dependence on the world-volume coordinates to the usual harmonic function. In this note we demonstrate that remarkably this generalisation goes through in exactly the same way for p-branes with fluxes added to it that correspond to fractional p-branes. We relate this to warped orientifold compactifications by trading the Dp-branes for Op-planes that solve the RR tadpole condition. This allows us to interpret the worldvolume dependence as due to lower-dimensional scalars that flow along the massless directions in the no-scale potential. Depending on the details of the fluxes these flows can be supersymmetric domain wall flows. Our solutions provide explicit examples of backreacted orientifold planes in compactifications with non-constant moduli.Comment: 20 pages, incl. references. v2: small changes required for JHEP publication. v3: few equation typos correcte