This note considers some of the properties of the Stokes pulse that grows from a specified seed pulse in the presence of a strong pump pulse as it propagates through a dispersive atomic vapor. We first present an generic dimensionless form for the coupled equations that govern the propagation of pump and Stokes fields or collinear plane-wave pulses. By treating the two fields we permit pump depletion. We include transient atomic response (as embodied in the Raman coherence), but neglect changes in atomic populations. (Thus our equations pertain to the regime in which atoms are more numerous than photons). The equations employ a gain length, a dispersion time {tau}{sub dis}, and a Raman coherence time (or memory time) {tau}{sub R} as basic parameters: these two times, together with a single-photon stationary-atom detuning {Delta}, subsume the details of a particular atomic Raman transition and particular operating conditions. (The effects of Doppler shifts enters the equations through the coherence time). We discuss some general properties of these generic Raman propagation equations, and present illustrations of their solutions in the absence of dispersion. We comment on departures from exponential growth. We than show examples of behavior when dispersion is present and the pump …

The Standard Model of particle physics, together with the Big Bang model of the early universe, constitute a framework which encompasses our current understanding of fundamental laws and beginning of our universe. Despite recent speculative trends, quantum field theory remains the theoretical tool of choice for investigating new physics either at high energy colliders, or in the early universe. In this dissertation, several field theoretic phenomena relevant to cosmology or particle physics are explored. A common theme in these explorations is the structure of the vacuum state in quantum field theory. First, we discuss first-order phase transitions in the early universe, in which the effective vacuum state of the universe shifts discontinuously as the temperature drops below some critical point. We find that the dynamics of a certain type of first-order phase transition can lead to production of primordial black holes, which could constitute the dark matter of our universe. Alternatively, supercooled first-order phase transitions may be the cause of an extended inflationary epoch in the early universe, which is generally regarded as necessary to solve several cosmological puzzles. We derive limits on such scenarios based on nearly model-independent percolation properties of the transition. We also study some nonperturbative aspects …

Photograph used for a story in the Daily Oklahoman newspaper. Caption: "This town recently received 2,000 square feet of new, steel-reinforced concrete bridge."

Photograph used for a newspaper owned by the Oklahoma Publishing Company. Caption: "Jerry Buckles of the Moore Aquatic Club wins his heat in the 100-meter breaststroke at the Oklahoma Junior Olympic Swimming Championships."

Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Stillwater second baseman David Kerr forces Enid's Jerod Stidham at second and throws to first to try and turn the double play during Friday's first round of the American Legion major tournament at Edmond."

A weekly publication, the Texas Register serves as the journal of state agency rulemaking for Texas. Information published in the Texas Register includes proposed, adopted, withdrawn and emergency rule actions, notices of state agency review of agency rules, governor's appointments, attorney general opinions, and miscellaneous documents such as requests for proposals. After adoption, these rulemaking actions are codified into the Texas Administrative Code.

The Standard Model of particle physics, together with the Big Bang model of the early universe, constitute a framework which encompasses our current understanding of fundamental laws and beginning of our universe. Despite recent speculative trends, quantum field theory remains the theoretical tool of choice for investigating new physics either at high energy colliders, or in the early universe. In this dissertation, several field theoretic phenomena relevant to cosmology or particle physics are explored. A common theme in these explorations is the structure of the vacuum state in quantum field theory. First, we discuss first-order phase transitions in the early universe, in which the effective vacuum state of the universe shifts discontinuously as the temperature drops below some critical point. We find that the dynamics of a certain type of first-order phase transition can lead to production of primordial black holes, which could constitute the dark matter of our universe. Alternatively, supercooled first-order phase transitions may be the cause of an extended inflationary epoch in the early universe, which is generally regarded as necessary to solve several cosmological puzzles. We derive limits on such scenarios based on nearly model-independent percolation properties of the transition. We also study some nonperturbative aspects …

None

Weekly newspaper from Sulphur Springs, Texas that includes local, state, and national news along with advertising.

Letter from Suzy Wagers to the Texas Human Rights Foundation Board of Trustees discussing a few miscellaneous updates, such as a trustee's surgery, fundraising, and committee position requests.

Daily newspaper from Baytown, Texas that includes local, state, and national news along with advertising.

Photograph of a historic property located at 4320 Second in Dallas, Texas.

Photograph of a historic property located at 3609 S Lamar in Dallas, Texas.

Photograph of a historic property located at 2210 Pine in Dallas, Texas.

Photograph of a historic property located at 3028 S Oakland in Dallas, Texas.

Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Rear Adm. William J. Ecker, right, commander of the 2nd Coast Guard District, addresses a crowd at the Federal Aviation Center during a command change ceremony for outgoing commander Harvey Langholtz, left."

Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Nelle Randle celebrates her 100th birthday with family and friends at the Spanish Cove Retirement Home, Yukon. More than 90 people attended her party. Randle was born Aug. 2, 1891."

Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Edmond Concilman Ron Mercer, left, compares a jar of unprocessed medical waste to a jar of processed waste turned ito plastic chips, while inventor Rolf Roland shows off products made from the chips."

Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Edmond Concilman Ron Mercer, left, compares a jar of unprocessed medical waste to a jar of processed waste turned ito plastic chips, while inventor Rolf Roland shows off products made from the chips."

Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Roland M. Smith has been named vice president for sutdent affairs for the University of Oklahoma's Norman campus."

Photograph of a historic property located at 3107 Holmes in Dallas, Texas.

Photograph of a historic property located at 3110 Holmes in Dallas, Texas.

Photograph of a historic property located at 1400 Martin Luther King in Dallas, Texas.

Photograph of a historic property located at 2503 Martin Luther King in Dallas, Texas.