Summaries of technical reports, volume XVII

Jacobson, Muriel L.

doi:10.3133/ofr83918

Cited by 3 publications

(2 citation statements)

References 29 publications

(38 reference statements)

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“…[30]. However, it remains to be studied whether this can be made compatible with other studies on the subject, in particular those using astrophysical observations to constraint the deviations from the law ω = k [35]. Rather than studying these examples in great details, we now turn to a new way of modeling the trans-Planckian regime.…”

Section: Modified Dispersion Relationsmentioning

confidence: 99%

Inflationary Cosmological Perturbations of Quantum-Mechanical Origin

Martin¹

Planck Scale Effects in Astrophysics and Cosmology

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This review article aims at presenting the theory of inflation. We first describe the background spacetime behavior during the slow-roll phase and analyze how inflation ends and the Universe reheats. Then, we present the theory of cosmological perturbations with special emphasis on their behavior during inflation. In particular, we discuss the quantum-mechanical nature of the fluctuations and show how the uncertainty principle fixes the amplitude of the perturbations. In a next step, we calculate the inflationary power spectra in the slow-roll approximation and compare these theoretical predictions to the recent high accuracy measurements of the Cosmic Microwave Background radiation (CMBR) anisotropy. We show how these data already constrain the underlying inflationary high energy physics. Finally, we conclude with some speculations about the trans-Planckian problem, arguing that this issue could allow us to open a window on physical phenomena which have never been probed so far.

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Section: Modified Dispersion Relationsmentioning

confidence: 99%

Inflationary Cosmological Perturbations of Quantum-Mechanical Origin

Martin¹

Planck Scale Effects in Astrophysics and Cosmology

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“…and so act as such unless moderation is a condition of political survival." 22 One reading of Jacobson's contribution is that it adds one more brick to the rising wall of evidence of a disconnect between partisan elites and the voters: elected representatives thumbing their noses, declining to ad just their positions to the voters', unless their back is to the wall. All the more reason, then, to study Aldrich and Freeze's contribution.…”

Section: Part Ii: Polarization and The Party Systemmentioning

confidence: 99%

Facing the Challenge of Democracy

Sniderman¹,

Highton²

2011

Facing the Challenge of Democracy

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This introductory chapter is about citizen competence in political participation. In politics, the prevailing opinion is that citizens fail minimally challenging tests of knowledge of public affairs and institutions. And in the face of such skepticism are counterarguments opposing this judgment of the average citizen's capacity for political participation. The chapter argues that such differences both amount to the same thing—the capacity of citizens to make politically coherent choices. To gain a better perspective on the situation, the chapter argues, one must first attempt to understand as deeply as possible the properties of political preferences of ordinary citizens. In this vein, the chapter tackles a number of issues related to this topic, and provides an overview of the following chapters.

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Regional deformation near Palmdale, California, 1973–1983

King¹,

Savage²

1984

J. Geophys. Res.

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The Tehachapi trilateration network spans the intersection of the San Andreas and Garlock faults in southern California in the “Big Bend” region of the San Andreas fault. Analysis of data from 1973–1983 shows strain differences between the northwest and southeast regions of the network and slip at depth on both faults. The Palmdale network, spanning the San Andreas fault entirely within the Tehachapi network, showed increases of about 1 μstrain in both east‐west and north‐south extension in late 1979. The Tehachapi strains also jumped at this time, but the magnitude of the increase was only about one third that of Palmdale. The principal strain rates for Tehachapi over the time interval 1973–1983 are trueε˙1=0.08±0.01 μstrain/yr and trueε˙2=‐0.12±0.01 μstrain/yr, with the 1 axis directed N76°E. Strains were also computed for two subregions. The principal strain rates for the southeast Tehachapi region are ε˙1=0.14±0.02 μstrain/yr and ε˙2=‐0.16±0.02 μStrain/yr, with the 1 axis directed N73°E. This result differs significantly from the principal strain rates at Palmdale ( ε˙1=0.21±0.02 μstrain/yr, ε˙2=0.17±0.01 μstrain/yr, with the 1 axis directed N71°E). For the northwest Tehachapi region, ε˙1=0.11±0.02 μstrain/yr and trueε˙2=‐0.06±0.02 μstrain/yr, with the 1 axis directed N93°E.

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Summaries of technical reports, volume XVII

Abstract: II.Earthquake Prediction (P)Objective 1. Obtain pertinent geophysical observations and attempt to predict great or very damaging earthquakes.Operate seismic networks and analyze data to determine character of seismicity preceding major earthquakes.

Cited by 3 publications

References 29 publications

Inflationary Cosmological Perturbations of Quantum-Mechanical Origin

Inflationary Cosmological Perturbations of Quantum-Mechanical Origin

Facing the Challenge of Democracy

Regional deformation near Palmdale, California, 1973–1983

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