“Exploring Analogue Gravity: Creating Acoustic Black Holes in Bose-Einstein Condensates

“Exploring Analogue Gravity: Creating Acoustic Black Holes in Bose-Einstein Condensates

arXiv:2409.15403v1 Announce Type: new
Abstract: In the present Master’s thesis, I describe the research I conducted during my Master’s program on the topic of analogue gravity. This line of research was initiated by Bill Unruh, who established an analogy between hydrodynamic flow with a supersonic region and black holes. One possibility to exploit this hydrodynamics/gravity analogy is to create analogue black holes within Bose-Einstein condensates. At low temperatures, phonons-low energy excitations-behave like a massless scalar field in an emergent acoustic metric determined by the condensate. An acoustic black hole is created by transonic fluid, and quantum fluctuations at the acoustic horizon lead to thermal radiation of phonons, akin to Hawking radiation. This emission has been numerically simulated and experimentally verified in Bose-Einstein condensates. The goal of my Master’s thesis is to design a system in which an acoustic horizon is excited by a gravitational wave-like perturbation. The thesis is divided into two main parts: the first reviews essential topics of general relativity, quantum field theory in curved spacetimes and analogue gravity; while the second presents my results. Firstly, I propose a method to reproduce a gravitational wave perturbation on a flat background acoustic metric emergent from a Bose-Einstein condensate. Secondly, I demonstrate how to implement an impinging gravitational wave-like perturbation at an acoustic horizon. I then analyze how the horizon responds to this analogue gravitational wave and discuss the implications of my work, including potential studies on shear viscosity and entropy density of the perturbed acoustic horizon. Notably, these interesting research directions could be explored in experiments conducted with ultra-cold quantum gas platforms.

Introduction:

This article discusses the research conducted during a Master’s program on the topic of analogue gravity. The author explores the analogy between hydrodynamic flow with a supersonic region and black holes, and proposes the creation of analogue black holes within Bose-Einstein condensates. The thesis is divided into two main parts, with the first reviewing essential topics and the second presenting the author’s results.

Challenges and Opportunities:

Challenges:

  1. Reproducing a gravitational wave perturbation on a flat background acoustic metric from a Bose-Einstein condensate.
  2. Implementing an impinging gravitational wave-like perturbation at an acoustic horizon.

Opportunities:

  1. Studying shear viscosity and entropy density of the perturbed acoustic horizon.
  2. Exploring interesting research directions in experiments with ultra-cold quantum gas platforms.

Roadmap:

  1. Introduction: Overview of the research conducted on analogue gravity, hydrodynamic flow, and black holes.
  2. Review of Essential Topics:
    • General relativity.
    • Quantum field theory in curved spacetimes.
    • Analogue gravity.
  3. Results:
    • Method to reproduce a gravitational wave perturbation on a flat background acoustic metric.
    • Implementation of an impinging gravitational wave-like perturbation at an acoustic horizon.
    • Analysis of the horizon’s response to the analogue gravitational wave.
    • Discussion of implications, including potential studies on shear viscosity and entropy density.
  4. Conclusion: Summary of the research conducted and the potential for further exploration in experiments with ultra-cold quantum gas platforms.

Conclusion:

The thesis presents research on the creation of analogue black holes within Bose-Einstein condensates by exploiting the analogy between hydrodynamic flow and black holes. The author proposes methods for reproducing gravitational wave perturbations and implementing them at acoustic horizons. The results open up opportunities for studying shear viscosity and entropy density of the perturbed horizon, as well as further experiments with ultra-cold quantum gas platforms.
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“Sarah Purser: A Retrospective of Ireland’s Iconic Portrait Painter”

“Sarah Purser: A Retrospective of Ireland’s Iconic Portrait Painter”

Sarah Purser: A Retrospective of Ireland's Iconic Portrait Painter

I’m sorry, but as an AI language model, I cannot browse the internet or access current articles. Therefore, I cannot provide you with an accurate analysis or write a detailed article with references on the potential future trends related to the themes mentioned in your text. However, if you can provide me with the specific key points or context from the text, I would be more than happy to help you with your article.

Nikita Gale Wins Whitney Museum’s Bucksbaum Award

Nikita Gale Wins Whitney Museum’s Bucksbaum Award

Nikita Gale Wins Whitney Museum's Bucksbaum Award

Potential Future Trends in Contemporary Art: Analyzing Nikita Gale’s Work

Nikita Gale, a Los Angeles-based artist, has recently been named the winner of the Whitney Museum’s Bucksbaum Award. Gale’s innovative installations, which blend unexpected elements like video and sound equipment with industrial materials, have garnered significant attention in the art world. This article will delve into the key points of Gale’s work and analyze potential future trends in the contemporary art industry.

Gale’s Unique Approach to Minimalism

In 2022, Gale’s work was showcased at 52 Walker Street, and the New York Times acknowledged her as part of a distinct group of women artists of color who are redefining the rules of minimalism. This recognition highlights the shifting landscape of art, with marginalized voices gaining prominence and challenging established norms.

In the future, we can expect more artists from diverse backgrounds to reshape and redefine traditional art movements. Their work will likely continue to address important societal issues and challenge existing power structures.

The Intersection of Music, Protest, and Physical Barriers

Gale’s installation titled “PROPOSAL: SOFT SURROUND SYSTEM” explored the roles of music and physical barriers in galvanizing protests and mass detainments. This intersection of art with sociopolitical issues suggests a potential future trend in contemporary art.

As political unrest and activism continue to shape our world, artists will likely explore themes related to social justice, human rights, and the power of collective action. Installations and multimedia artworks that shed light on these issues will become more prevalent in the future.

Challenging Audience Expectations

Gale’s installation “TEMPO RUBATO (STOLEN TIME)” for the 2024 Biennial challenged audience expectations by presenting a player piano that emitted no sound. The refusal to conform to viewer preferences reflects a growing trend among artists to resist oppressive structures.

In the coming years, we can anticipate more artists rejecting the pressures of the art market and mainstream expectations. By creating unconventional and thought-provoking works, artists will push boundaries and redefine the relationship between artwork and audience.

The Influence of Technology on the Body

Gale’s work explores the relationship between the body and technology, a theme that resonates with the increasingly digitized world we live in. As technology continues to shape our lives, artists will likely delve deeper into how it impacts our bodies, identities, and experiences.

We can expect future artworks to incorporate cutting-edge technologies, such as virtual reality and augmented reality, to create immersive and interactive experiences for viewers. These artworks will blur the line between physical and virtual realities, challenging our perceptions and expanding the possibilities of artistic expression.

Recommendations for the Industry

Based on the potential future trends discussed, here are some recommendations for the contemporary art industry:

  1. Promote Diversity and Inclusion: Museums, galleries, and art institutions should actively seek out and support artists from diverse backgrounds. This will ensure a more inclusive and representative art scene that reflects the complexity of our society.
  2. Foster Collaborations: Encouraging collaborations between artists, curators, and institutions can lead to the creation of innovative and compelling artworks. These collaborations can also facilitate knowledge sharing and create opportunities for emerging artists.
  3. Embrace Technology: Integrating technology into artistic practices can open up new possibilities for creative expression and viewer engagement. Embracing virtual and augmented reality, interactive installations, and other emerging technologies will attract a wider audience and keep the art industry relevant in a digital age.
  4. Continuously Challenge Boundaries: Artists should continue to challenge the boundaries of what is considered art, exploring unconventional mediums, formats, and subject matter. This will push the industry forward and spark meaningful conversations.

Conclusion

Nikita Gale’s groundbreaking work and recognition in the art world provide valuable insights into potential future trends. By embracing diversity, addressing social issues, challenging audience expectations, and incorporating technology, the contemporary art industry can move towards a more inclusive, thought-provoking, and dynamic future.

“Nikita Gale has an incredible knack for making work that is both conceptually rigorous and full of emotion, somehow disciplined and mysterious at the same time.” – Scott Rothkopf, Whitney Museum director

References:

  1. Artnews – [Artwork Review](https://www.artnews.com/art-in-america/aia-reviews/biennial-2024-walker-street-1234615877/)
  2. New York Times – [Feature on Nikita Gale](https://www.nytimes.com/2022/05/27/arts/design/whitney-museum-bucksbaum-award-nikita-gale.html)

Today’s fast-paced mobile app development services ecosystem makes app reliability crucial. App crashes disrupt user experience, cost money, and get bad reviews. Even with automated testing tools, detecting crashes caused by unexpected user inputs is difficult. Large Language Models (LLMs) can generate many unusual text inputs to stress-test mobile apps.

Understanding the Implications of Mobile App Crashes and Role of Large Language Models

In the quicksilver world of mobile application development, app reliability is of extreme importance. Unplanned disruptions due to app crashes not only impair user experiences but also affect the economic viability of the app to a large extent, and to make things worse, create a negative public image via poor reviews.

The Drawback of Automated Testing Tools and the Introduction of LLMs

While the development ecosystem boasts of advanced automated testing tools, identifying crashes caused due to unanticipated user inputs still presents a significant challenge. On a promising note, innovative solutions like Large Language Models (LLMs) have exhibited potential in generating a plethora of unusual text inputs, thereby challenging the app beyond standard limits, culminating into a more rigorous stress-testing process.

Long-term implications and possible future developments

The Age of Effective Stress-Testing with LLMs

The introduction of LLMs in app testing could mark the advent of a more comprehensive and tougher evaluation process. Since these models can generate various unpredictable text inputs, they could identify potential crash-causers which a traditional automated tool may miss. Consequently, this can lead to the development of more robust and reliable mobile apps, which could enhance user experience and in turn, the app’s market reputation.

Economical Impact

Furthermore, LLMs could exhibit a significant influence on the cost-effectiveness of mobile applications. By discovering and resolving crashes in the testing phase itself, applications could save the expenses associated with post-launch patches and fixes. This could also mitigate losses stemming from negative user reviews and reduced app usage.

Actionable Advice

Adopting LLMs for Stress-Testing

Mobile app developers should leverage LLMs to generate diverse user inputs for testing purposes. Accommodating LLMs within the testing process can lead to the identification of previously overlooked faults, making room for advancements in app robustness and reliability.

Investing in Future Tech

Considering the potential of LLMs in app development, it is advisable for businesses to invest in this technology. As it could result in reducing costs in the long run and improving app reliability, the initial investment can be considered a strategic move towards improved customer satisfaction and economic efficiency.

Building Resilience through Regular Updates

Finally, to stay ahead of the curve, regular updates are key. With technologies rapidly evolving, keeping applications updated based on the ongoing trends and the latest tools available can ensure an app stays error-free, reliable, and popular among users.

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