OPTICA-SPIE Student Chaper Washington State University

Departmental Colloquium Featuring Dr. Mário Ferreira
2022-02-10 12:10 - 13:00 (America/Los_Angeles) | Zoom
The Department of Physics and Astronomy and the OPTICA-SPIE student chapter at WSU are pleased to announce the colloquium featuring Dr. Mário Ferreira on February 10th, 2022. Dr. Ferreira is a professor at the University of Aveiro (Lisbon) in the Department of Physics and at I3N — the Institute of Nanostructures, Nanomodelling and Nanofabrication. A question and answer panel will be held from 11:00AM to 12:00 PM. The colloquium time will be held from 12:10–1:00 PM, all over zoom. We invite you to join us in welcoming Dr. Ferreira and learning from him. Abstract and bio listed here: ABSTRACT_WSU_2022.

Jeevake Attapattu - An Introduction to p-n Junction Devices for Physicists
2021-05-25 12:00 - 12:30 | Webster 16 – Student Lead Colloquium
We are pleased to have Jeevake Attapattu present in our student lead colloquium.
Zoom Information:
954 1690 7777
osaspie20

Auberry Fortuner - Colloquium
2021-04-20 16:00 - 17:00 | Webster 16 – Student Lead Colloquium
We are honored to host Auberry Fortuner, one of our fellow graduate students present his research on “Underwater Acoustic Line-Scan Imaging of Interface Scattering Effects” both in person in Webster 16 and over zoom. The zoom information will be:
Meeting ID: 954 1690 7777
Passcode: [REDACTED]

Please, click on the website link below to sign up for this event.

Jeevake Attapattu - An Introduction to Density Functional Theory
2021-04-13 16:00 - 17:00 | Webster 16 – Student Lead Colloquium
We are honored to host Jeevake Attapattu, one of our fellow graduate students present his research on ‘An Introduction to Density Functional Theory‘ both in person in Webster 16 and over zoom. The zoom information will be:
Meeting ID: 954 1690 7777
Passcode: [REDACTED]

Please, click on the website link below to sign up for this event.

Islam Khan - Effects of Inflation Constrained to Explain Dark Energy
2021-04-06 16:00 - 17:00 | Webster 16 – Student Lead Colloquium
We are honored to host Islam Khan, one of our fellow graduate students present his research on the ‘Effects of Inflation Constrained to Explain Dark Energy’ both in person in Webster 16 and over zoom. The zoom information will be:
Meeting ID: 954 1690 7777
Passcode: [REDACTED]

Abstract:
Inflation has become one of the most important paradigms in modern cosmology, while investigating dark energy’s nature remains one of its main challenges. This work explores a possible mechanism for connecting inflation and dark energy, where the minimum of the string-theory-motivated Kähler Moduli Inflation I (KMII) potential is constrained to provide a source for today’s dark energy density. The viability of the model and the effects and predictions of the models’ post-inflationary phase known as reheating are analyzed. The model’s parameter space is explored against the measured Cosmic Microwave Background (CMB) data using the Markov Chain Monte Carlo (MCMC) sampling method. Floquet analysis and numerical lattice simulations are used to analyze the (p)reheating effects of the model, with a focus on the phenomena of self- and parametric resonant effects during the inflaton field oscillations. The allowed ranges of the model parameters are estimated, which are used to predict the reheating temperature of the Universe and the inflaton field’s mass. Although it suffers from fine-tuning and predicts a high reheating temperature, the adopted two-field model is consistent with the measured CMB data when the KMII potential’s minimum is constrained to a value equivalent to the cosmological constant. No self- or parametric resonant effects in either the Floquet analysis or lattice simulation results were found in the regions of interest. Finally, it was found stochastic gravitational-wave backgrounds (SGWBs) are generated during the inflaton field oscillations that would be observable today in the 10^9 – 10^10 Hz frequency range.

Please, click on the website link below to sign up for this event.
