The nonlinear interaction, due to quantum electrodynamical (QED) effects between an electromagnetic pulse and a radiation background, is investigated by combining the methods of radiation hydrodynamics with the QED theory for photon-photon scattering. For the case of a single coherent electromagnetic pulse, we obtain a Zakharov-like system, where the radiation pressure of the pulse acts as a driver of acoustic waves in the photon gas. For a sufficiently intense pulse and/or background energy density, there is focusing and the subsequent collapse of the pulse. The relevance of our results for various astrophysical applications are discussed.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1103/PhysRevLett.91.163601 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Impact and Durability of the Affordable Care Act Medicaid Expansion on Lung Cancer Treatment.
Ann Thorac Surg Short Rep
December 2024
Department of Surgery, Sidney Kimmel Medical College, Thomas Jefferson University, Philadelphia, Pennsylvania.
Background: Medicaid expansion began in 2014 after passage of the Affordable Care Act; however, the impact and durability of the effects on lung cancer treatment utilization are poorly defined. We aimed to determine whether there is a persistent difference in utilization of lung resection, lung biopsy, and nonoperative treatment of lung cancer in states participating in Medicaid expansion compared with states that are not.
Methods: A retrospective cohort study was completed analyzing the difference in utilization between Medicaid expansion states and non-expansion states in 2012-2013, 2016-2017, and 2019.
Secondary Esophageal Cancer After Hematopoietic Stem Cell Transplant: An Institutional Case Series.
Ann Thorac Surg Short Rep
September 2024
Division of Thoracic Surgery, Brigham and Women's Hospital, Boston, Massachusetts.
Background: Development of secondary esophageal cancer after hematopoietic stem cell transplantation has been described; however, there is little consensus on treatment and surveillance for these patients. The objective of this study was to describe our experience treating patients with secondary esophageal cancer.
Methods: A retrospective chart review of prospectively collected data was performed to identify patients who underwent hematopoietic stem cell transplantation from 1997 to 2012 and in whom esophageal cancer developed later.
Challenges in Metabolite Biomarkers as Avenues of Diagnosis and Prognosis of Cancer.
J Cancer Prev
December 2024
Cancer and Translational Research Lab, Dr. D. Y. Patil Biotechnology and Bioinformatics Institute, Pune, India.
Given the evolutionary nature of tumor complexities and heterogeneity, the early diagnosis of cancer encounters various challenges. Complexities at the level of metabolite reprogramming are compelling in the background of invasiveness, metastasis, drug- and radiation-induced metabolic alterations, immunotherapy-influenced changes, and pro-tumor niche including microbiome. Therefore, it is crucial to examine both current and future obstacles associated with early cancer detection specifically in the context of tumor metabolite biomarkers at preclinical and clinical levels.
View Article and Find Full Text PDFEvaluation of myocardial perfusion imaging techniques and artificial intelligence (AI) tools in coronary artery disease (CAD) diagnosis through multi-criteria decision-making method.
Cardiovasc Diagn Ther
December 2024
Operational Research Center in Healthcare, Near East University, Nicosia, Turkey.
Background: Cardiovascular diseases (CVDs) continue to be the world's greatest cause of death. To evaluate heart function and diagnose coronary artery disease (CAD), myocardial perfusion imaging (MPI) has become essential. Artificial intelligence (AI) methods have been incorporated into diagnostic methods such as MPI to improve patient outcomes in recent years.
View Article and Find Full Text PDFImpact of Pediatric Posterior Fossa Tumor Treatments on Working Memory Tracts Using Resting-State fMRI and Tractography.
J Neuroimaging
January 2025
Toulouse NeuroImaging Center (ToNIC), INSERM, University of Toulouse Paul Sabatier, Toulouse, France.
Background And Purpose: Working memory, a primary cognitive domain, is often impaired in pediatric brain tumor survivors, affecting their attention and processing speed. This study investigated the long-term effects of treatments, including surgery, radiotherapy (RT), and chemotherapy (CT), on working memory tracts in children with posterior fossa tumors (PFTs) using resting-state functional MRI (rs-fMRI) and diffusion MRI tractography.
Methods: This study included 16 medulloblastoma (MB) survivors treated with postoperative RT and CT, 14 pilocytic astrocytoma (PA) survivors treated with surgery alone, and 16 healthy controls from the Imaging Memory after Pediatric Cancer in children, adolescents, and young adults study (NCT04324450).
Want AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!