2,773 research outputs found
Spin Effects in Long Range Gravitational Scattering
We study the gravitational scattering of massive particles with and without
spin in the effective theory of gravity at one loop level. Our focus is on long
distance effects arising from nonanalytic components of the scattering
amplitude and we show that the spin-independent and the spin-dependent long
range components exhibit a universal form. Both classical and quantum
corrections are obtained, and the definition of a proper second order potential
is discussed.Comment: 51 pages, 8 figure
Long Distance Effects in Mixed Electromagnetic-Gravitational Scattering
Using the methods of effective field theory we examine long range effects in
mixed electromagnetic-gravitational scattering. Recent calculations which have
yielded differing results for such effects are examined and corrected. We
consider various spin configurations of the scattered particles and find that
universality with respect to spin-dependence is obtained in agreement with
expectations.Comment: 38 pages, 6 figure
Quark and lepton masses and mixing in the landscape
Even if quark and lepton masses are not uniquely predicted by the fundamental
theory, as may be the case in the string theory landscape, nevertheless their
pattern may reveal features of the underlying theory. We use statistical
techniques to show that the observed masses appear to be representative of a
scale invariant distribution, rho(m) ~ 1/m. If we extend this distribution to
include all the Yukawa couplings, we show that the resulting CKM matrix
elements typically show a hierarchical pattern similar to observations. The
Jarlskog invariant measuring the amount of CP violation is also well reproduced
in magnitude. We also apply this framework to neutrinos using the seesaw
mechanism. The neutrino results are ambiguous, with the observed pattern being
statistically allowed even though the framework does not provide a natural
explanation for the observed two large mixing angles. Our framework highly
favors a normal hierarchy of neutrino masses. We also are able to make
statistical predictions in the neutrino sector when we specialize to situations
consistent with the known mass differences and two large mixing angles. Within
our framework, we show that with 95% confidence the presently unmeasured MNS
mixing angle sin theta_{13} is larger than 0.04 and typically of order 0.1. The
leptonic Jarlskog invariant is found to be typically of order 10^{-2} and the
magnitude of the effective Majorana mass m_{ee} is typically of order 0.001 eV.Comment: 32 pages, 17 figures, some references adde
Ruin Probabilities and Overshoots for General Levy Insurance Risk Processes
We formulate the insurance risk process in a general Levy process setting,
and give general theorems for the ruin probability and the asymptotic
distribution of the overshoot of the process above a high level, when the
process drifts to -\infty a.s. and the positive tail of the Levy measure, or of
the ladder height measure, is subexponential or, more generally, convolution
equivalent. Results of Asmussen and Kluppelberg [Stochastic Process. Appl. 64
(1996) 103-125] and Bertoin and Doney [Adv. in Appl. Probab. 28 (1996) 207-226]
for ruin probabilities and the overshoot in random walk and compound Poisson
models are shown to have analogues in the general setup. The identities we
derive open the way to further investigation of general renewal-type properties
of Levy processes.Comment: Published at http://dx.doi.org/10.1214/105051604000000927 in the
Annals of Applied Probability (http://www.imstat.org/aap/) by the Institute
of Mathematical Statistics (http://www.imstat.org
Investigations in the female dog s vaginal aerobic flora and pH
Deckblatt-Impressum
Inhaltsverzeichnis
Abkürzungen
Einleitung
Literatur
Eigene Untersuchungen
Ergebnisse
Diskussion
Zusammenfassung / Summary / Summatio
Anhang
Quellenverzeichnis
Tabellen- und Abbildungsverzeichnis
Danksagung
SelbständigkeitserklärungBei 379 Hündinnen in allen Altersstufen und Zyklusphasen einschließlich 16
kast-rierter Tiere wurde neben der allgemeinen und gynäkologischen
Untersuchung ein zytologischer und bakteriologischer Vaginalabstrich
durchgeführt. Bei 100 Hündinnen wurde zusätzlich der vaginale pH-Wert
gemessen. Das physiologische Keimspektrum umfasste bei juvenilen Hündinnen
allein S. intermedius. Erkrankte waren mit Staphylokokken sp., S. intermedius,
S. aureus, P. aeruginosa und E. coli belastet. Bei gesunden Tieren im
Proöstrus wurden gefunden: Staphylokokken, Strepto-kokken, Enterokokken,
Pasteurellen, E. coli und Bacillus sp. Erkrankte wiesen S. dysgalaktiae, S.
intermedius, P. mirabilis, Pasteurella spp. sowie E. coli auf. Im Östrus
gesunder Tiere waren folgende Keime vertreten: Pseudomonaden, Corynebakterien,
E. coli, Klebsiella oxytocans, Pasteurellen spp., S. intermedius, S. aureus,
Pasteurella multocida, Streptococcus canis: Lancefield-Gruppe G. Die klinisch
auffälligen Tiere waren im Östrus mit E. coli, P. mirabilis S. intermedius und
S. canis Lancefield-Gruppe D belastet. Die physiologischen Keime des Metöstrus
waren: E. coli, Staphylokokken, Ente-rokokken und S. canis, Lancefield-Gruppe
G. Die klinisch erkrankten Tiere wie-sen E. coli, P. mirabilis, S. aureus, S.
intermedius, S. canis Lancefield-Gruppe G, S. faecalis sowie Streptokokken
spp. auf. Im Anöstrus wurden bei gesunden Hündinnen diese Keime bestimmt:
Aeromo-nas, Alcaligenes faecium, E. coli, Pantoae agglomerans, Pasteurella
spp. Pseu-domonas spp. Staphylokokken, Streptokokken und Fäkalkeime. Die
klinisch auf-fälligen Hündinnen im Anöstrus wiesen folgende Keime auf: E.
coli, P. mirabilis, P. aeruginosa, S. aureus, S. intermedius, S. faecalis
sowie Streptokokken und Staphylokokken spp. Das Keimspektrum kastrierter,
gesunder Hündinnen umfasste: S. aureus, S. in-termedius, S. canis Lancefield-
Gruppe G, Enterokokken sowie ß-hämolysierende E. coli. Bei den erkrankten trat
P. mirabilis, S. aureus, S. intermedius, S. canis Lancefield-Gruppe G und S.
faecalis auf. Bei Gesunden wie Kranken variierte der mittlere pH in der Vagina
von 6,8 bis 7,2. Es gab keinen Hinweis auf Zusammenhänge zwischen einzelnen
Erkrankungen und dem vaginalen pH-Wert.Bacteriological and cytological evaluation in 379 bitches of all ages and in
differ-ent phases of the cyclus, 16 castrated bitches including was taken
after common and gynaecological examination. Within hundred of them the
vaginal pH was measured. The only species isolated in juvenile healthy bitches
was S. intermedius. The invalids suffered from Staphylococci sp., S.
intermedius, S. aureus, P. aeruginosa and E. coli. Staphylococci,
Streptococci, Enterococci, Pasteurellae, E. coli and Bacillus sp. were found
in healthy bitches during prooestrus. The ill ones were ailing from E. coli,
P. mirabilis, S. aureus, S. intermedius, S. canis Lancefieldgroup G, S. fae-
calis as well as Streptococci spp. The typical germs of oestrus in healthy
bitches were Pseudomonades, Coryne-bacteriae, E. coli, Klebsiella oxytocans,
Pasteurella sp., S. intermedius, S. aureus, P. multocida and S. canis
Lancefieldgroup G. In pathological cases dur-ing oestrus cyclus E. coli, P.
mirabilis S. intermedius and S. canis Lance-fieldgroup D were found. The
physiological flora of metoestrus consisted of E. coli, Staphylococci, Entero-
cocci and S. canis Lancefieldgroup G. The bacteriae found in cases of gynaeco-
logical illness during metoestrus were E. coli, P. mirabilis, S. aureus, S.
interme-dius, S. canis Lancefieldgroup G, S. faecalis as well as Streptococci
spp. During anoestrus of healthy bitches the following bacteriae were found:
Aeromo-nas, Alcaligenes faecium, E. coli, Pantoae agglomerans, Pasteurella
spp. Pseu-domonas spp. Staphylococci, Streptococci and Enterococci. Bitches
apparently suffering from gynaecological diseases were infected with E. coli,
P. mirabilis, P. aeruginosa, S. aureus, S. intermedius, S. faecalis,
Streptococci and Staphylo-cocci spp The castrated healthy bitches vaginae
beared S. aureus, S. intermedius, S. canis, Enterococci and E. coli with
ß-haemolysis. Castrated bitches during ano-estrus revealing signs of
gynaecological illness suffered from P. mirabilis, S. aureus, S. intermedius,
S. canis Lancefieldgroup G and S. faecalis. The average pH measured inside the
vagina of both groups varied from 6.8 to 7.2. There were no hints of
correlations between specific diseases and corre-sponding pH to be detected
Photochemistry of platinum and iridium compexes relevant to solar energy conversion and storage
Reverse Carleson Embeddings for Model Spaces
The classical embedding theorem of Carleson deals with finite positive Borel
measures on the closed unit disk for which there exists a positive
constant such that for all ,
the Hardy space of the unit disk. Lef\'evre et al. examined measures for
which there exists a positive constant such that for all . The first type of inequality above was explored
with replaced by one of the model spaces by
Aleksandrov, Baranov, Cohn, Treil, and Volberg. In this paper we discuss the
second type of inequality in .Comment: 33 page
The tail effect in gravitational radiation-reaction: time non-locality and renormalization group evolution
We use the effective field theory (EFT) framework to calculate the tail
effect in gravitational radiation reaction, which enters at 4PN order in the
dynamics of a binary system. The computation entails a subtle interplay between
the near (or potential) and far (or radiation) zones. In particular, we find
that the tail contribution to the effective action is non-local in time, and
features both a dissipative and a `conservative' term. The latter includes a
logarithmic ultraviolet (UV) divergence, which we show cancels against an
infrared (IR) singularity found in the (conservative) near zone. The origin of
this behavior in the long-distance EFT is due to the point-particle limit
-shrinking the binary to a point- which transforms a would-be infrared
singularity into an ultraviolet divergence. This is a common occurrence in an
EFT approach, which furthermore allows us to use renormalization group (RG)
techniques to resum the resulting logarithmic contributions. We then derive the
RG evolution for the binding potential and total mass/energy, and find
agreement with the results obtained imposing the conservation of the (pseudo)
stress-energy tensor in the radiation theory. While the calculation of the
leading tail contribution to the effective action involves only one diagram,
five are needed for the one-point function. This suggests logarithmic
corrections may be easier to incorporate in this fashion. We conclude with a
few remarks on the nature of these IR/UV singularities, the (lack of)
ambiguities recently discussed in the literature, and the completeness of the
analytic Post-Newtonian framework.Comment: 24 pages. 3 figures. v2: Extended discussion on the nature of IR/UV
singularities. Published versio
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