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We want to show that it is not possible to have only one string endpoint on a DO-brane. Intuitively, the string charge, visualized as a current on the string, has nowhere to go on the pomthke 00-brane. More quant1tat1vely, as m any D-brane, on the 00-brane there is a gauge field that couples to the string endpoint as in ( 15.54). Since the DO-brane has no spatial coordinate the gauge field is just A 0 . Show that the Maxwell action vanishes, and that, as a result, the variation of Ao imposes an inconsistent equation of motion. Note that the inconsistency is removed if the two endpoints of an open string lie on the DO-brane.
(b) Consider the covariant quantization of an open string whose endpoints Iie on a DO-brane. Describe the ground states, noting that the momentum has a single component. Con struct the general states with N= 0 and discuss the equation of motion for the tachyon field (t ). Construct the N = I physical states. Show that there are no relevant null states, and that we have D independent physical states of zero momentum.
(c) Give the mass m0 of a DO-brane (see Section 18.4). In type IIA superstring theory the same formula applies, and a bound state of 11 DO-branes 1s known to have a mass exactly equal to nmo. Such states can be identified with momentum states that arise from a compact eleventh dimension, assummg that the momentum p along this d1mens1on contributes to the mass of the effective ten-di mensional particle as i n m = p. What is the radius R of this eleventh dimension? How does it behave as a function of g? This result is one piece of evidence for the fact that eleven-di mensional M-theory compactified on a circle is type IIA superstring theory.
I need to create an HTML contact form that when submitted is processed by a JSP. a.The JSP displays the entered data along with the length of characters entered in each field.
Draw a program flowchart for a program that will accept one number as input. Assume this number represents some amount of yards.
For each of these sublists, the median is found. Further, the median of these medians is found and returned as the pivot. Perform the analysis and prove the new bounds.
a) Assume Ce in Z. Give an algorithm that finds the MSF (minimum spanning forest), show correctness and running time of this algorithm.
The GlobalUBid.Com Case Study will be used to develop a requirements traceability matrix describing and following the life of requirements in both the forward and backward direction.
What is intermodulation distortion? What sorts of signals are susceptible to this form of distortion?In addition, identify two situations in which error-free transmission is crucial to business processes. Instructions:•Your research essay should be ..
What other SQL operator can sometimes be used to perform the same operation as the IN operator? Under what circumstances can this other operator be used.
One of the most widely used applications of spectroscopy is for the quantitative determination of the concentration of biological molecules in solution. The absorbance of a solution.
If the organization has three information assets to estimate for risk management purposes which vulnerability must be estimated for additional controls first? Which vulnerability must be evaluated last?
Analyze how the university might integrate at least two social media and networking technologies to accomplish their goals. Your analysis must cover the advantages and disadvantages of social networking.
Discuss the IPO chart, its components, and its benefits to program development. In your opinion, what would be the impact if one of these components were omitted? Thoroughly explain.
Write a Java statement to display the string "The value is 100" to a user in a plain dialog box.
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