1,072 research outputs found
Tunneling of Born-Infeld Strings to D2-Branes
A Born-Infeld theory describing a D2-brane coupled to a 4-form RR field
strength is considered, and the general solutions of the static and Euclidean
time equations are derived and discussed. The period of the bounce solutions is
shown to allow a consideration of tunneling and quantum-classical transitions
in the sphaleron region. The order of such transitions, depending on the
strength of the RR field strength, is determined. A criterion is then derived
to confirm these findings.Comment: 20 pages, 7 postscript figures, will appear in NP
Paradox of choice: The influence of assortment size on customer satisfaction
Recently researchers showed that more choice is not always better. Choosing from large
assortments can be overwhelming, raising expectations and decreasing overall level of
consumer satisfaction. Author contributes to existing overchoice studies by using real
assortment of online stores to find influence of assortment size on customer satisfaction. 90
students participated in the main experiment, where they chose a smartphone case for their
friend. Results of the study show that large assortment size leads to higher expectations,
higher choice difficulty and higher level of satisfaction. This research does not show
overchoice presence and author suggests future studies could focus more on assortment
variety and more personal characteristics of consumers, like preference uncertainty
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