Tags » Mathematical Physics

Friedmann--Lemaitre Cosmologies via Roulettes and Other Analytic Methods [CL]


In this work a series of methods are developed for understanding the Friedmann equation when it is beyond the reach of the Chebyshev theorem. First it will be demonstrated that every solution of the Friedmann equation admits a representation as a roulette such that information on the latter may be used to obtain that for the former. 90 more words

Cosmology And Nongalactic Astrophysics

Celebrating Australia's National Science Week

From the 15th-23rd August Australia celebrated its National Science Week with festivals, demonstrations, walks, performances and open days across the country. The event presented a fantastic opportunity to acknowledge the contributions of Australian scientists and to encourage an interest in science pursuits among the general public and young people. 425 more words

Journal Of Physics A: Mathematical And Theoretical

Giấy, kính trắc tinh, thước đo, la bàn: Giới thiệu ngắn gọn về các công cụ toán học sử dụng trong thuyết tương đối rộng

Posted on 08/11/2015 by CodeXGalactic

Tôi sẽ  cố gắng để cung cấp một giới thiệu có thể tiếp cận thuyết tương đối tổng quát cho những người không chuyên toán mà không giải thích quá sâu các đối tượng toán học sao cho ai đó đọc được đều có cảm giác có thể theo các nghiên cứu trong lĩnh vực này. 1,744 more words

Bài Báo Ngắn

Stochastic Eternal Inflation in a Bianchi Type I Universe [CL]


In this paper, we analyze a Bianchi Type I model with a scalar field in a chaotic inflation potential, $V(\phi) = \frac{1}{2}\phi^2$ in the context of stochastic eternal inflation. 270 more words

Cosmology And Nongalactic Astrophysics

Guest blog entry: Murray Batchelor revisits four decades of JPhysA publications from Rodney J Baxter

By Murray Batchelor

I am Topical Reviews Editor for Journal of Physics A: Mathematical and Theoretical. I have been working primarily at the Centre for Modern Physics, Chongqing University, China since 2013. 1,181 more words


The three-body problem [EPA]


The three-body problem, which describes three masses interacting through Newtonian gravity without any restrictions imposed on the initial positions and velocities of these masses, has attracted the attention of many scientists for more than 300 years. 104 more words

Earth And Planetary Astrophysics